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Standard 

SERVICE BOOK 

of Instruction 

for the Operation of the 

Edison-Dick Mimeograph 

and MlMEOSCOPE 

WITH THE DERMATYPE STENCIL PROCESS 

Containing 

Step-by-Step instructions neces¬ 
sary to attain results of the 
highest quality. Also Chapters on 
important Reproduction Methods 
of stylus and typewritten work. 



Published by 


A. B. Dick Company 

CHICAGO 


Branches and dealers throughout the world 



















Page 2 


The Service Book 


SL 



























































































A. B. Dick Company 


Page 3 


The Mimeograph Service Book 

It will be obvious to the readers of this book that consideration of 
minute details and thoroughness are the principal objects of the edition. 
The instructions furnished with the Mimeograph are augmented in this 
book. It treats numerous fine points of the Mimeograph process as well 
as the difficulties that beset those who are indifferent or through lack of 
knowledge persist in using wrong methods, and it emphasizes the varied 
exactions involved in the attainment of perfect results. 

By publishing such a book we hope to extend manifold benefits to all 
users of modem Mimeographs and at the same time collocate our standard 
instructions. 

Aside from this broad and general object of The Mimeograph Service 
Book another motive deserves to be explained. There are among our 
customers many who especially desire that their mimeographing results 
should give evidence of painstaking effort and skill. The mutual interest 
which we have with this progressive class of users has supplied the major 
part of the incentive we have felt to furnish such comprehensive information; 
and, therefore, we ask tolerance to expend a liberal share of our enthusiasm 
upon those who are thus keenest for improvement in results. 

The instructions contained in the following pages are intended to be all 
that are necessary for the proper operation of the models Nos. 77 and 78 
Edison-Dick Mimeographs with Dermatype stencil paper. For convenience, 
the machine instructions refer principally to the model No. 78, but they are 
equally applicable to the No. 77, except those portions which refer particularly 
to automatic feeding, of impression paper, this being an exclusive feature 
of the model No. 78. Similar instructions covering the proper operation of 
the older types of Rotary Mimeographs and special machines designed for 
exceptionally large work, as well as directions for the use of wax stencil 
paper, are contained in our illustrated booklet entitled “The Mimeograph 
Manual.” The figures which appear in parentheses in the text of this book 
are those corresponding to the figures on the reference chart of Mimeo¬ 
graph parts shown on page 6. List numbers of parts and supplies for the 
Nos. 77 and 78 Mimeographs are occasionally used and are the identifying 
numbers used in our two booklets, “List of Farts” and “List of Auxiliaries 
and Supplies.” Any of the three publications mentioned will be sent free 
of charge upon request. 

We trust that the issuance of The Mimeograph Service Book for 
widespread distribution will also make amply evident the desire we have 
to serve the needs of all. 


A. B. DICK COMPANY . 





Page 4 


-The Service Book 



Mimeograph Factory 
and 

General Offices 
730-744 West Jackson 
Boulevard 


Mimeograph Supplies Factory 


Corner Lake and Albany Streets' 




























A. B. Dick Company 


Page 5 


The Three Factors 

The Mimeograph The Typewriter The Operator 

I N their order, the Efficiency of the Mimeograph itself, with its Supplies, 
the Condition of the Typewriter used, and the Proficiency of the 
Operator employed, may be said to figure as three distinct factors in the 
problem of successful Stencil Reduplication. 

We alone supply, and are directly responsible for, the Mimeograph and 
its supplies; and while we strive to influence the other essential factors, 
still their actual condition is beyond our immediate control. The Mimeo¬ 
graph has been brought to the highest state of development demanded by 
exacting requirements. Were it possible for us to exert the same control 
over the condition of the typewriting machine and likewise over the selection 
and training of operators, we would then be in a position to assume the entire 
responsibility for the combined process and the subsequent results attained. 


Factor 1—THE MIMEOGRAPH AND SUPPLIES 

While it is necessary for the attainment of proper results from the use of a Mimeo¬ 
graph that it be operated in accordance with accurate instructions , it is no less essential 
to its successful operation that the proper supplies, such as Ink, Stencil Paper, Pads, etc., 
be used (and these are made by us). We have developed and perfected both the process 
and the machine, and are conversant with every requirement of the users. We there¬ 
fore have the greatest possible interest in their success. With makers of imitation supplies 
the only consideration is that of immediate profit. The use of such imitations is equiva¬ 
lent to courting failure. None are genuine that do not bear our name as makers. 
Our responsibility naturally ceases when supplies other than those of our manufacture 
are used; whereas the use of supplies made by us insures the user our Service, and 
with it, if directions are faithfully followed, the guarantee of satisfactory results. 


Factor 2—THE TYPEWRITER 

The typewriting machine best adapted for stencil writing must have type in 
good condition, and a platen (roller) of proper degree of hardness to present the neces¬ 
sary resistance to the impact of the type. The smoothness of the platen must likewise 
be considered; a roller, indented through excessive usage, will not produce a perfect 
stencil. The fullest attention must be given to the cleanliness of the face of the type. 
All details of instruction covering such matters will be found under proper heads. 


Factor 3—THE OPERATOR 

Indifference is the barrier most difficult to surmount. The operator who desires to 
learn well-nigh solves the problem of his own accord and, if he takes proper interest in 
what we would impart, proficiency and skill are easily attained. The experience of years 
of instructing is presented in this book in the most concise form that accuracy will 
permit. By direct statements expressed in simple terms, and by a progress made 
gradual through the various Steps in the work, we have developed a method of direction 
by which anyone may learn. 




Page 6 


The Service Book 


Reference Chart of Mimeograph Parts 



54 


64 


Automatic Feedboard 


42 


35 


Hand Feedboard for No. 78 


1. Left Hand Cylinder Trun¬ 

nion 

2. Cylinder Trunnion Screw 

3. Cylinder Trunnion Lock 

4. Idler Roller Set Screw 

5. Impression Roller Adjust¬ 

ing Nuts 

5a. Impression Release Lever 

6. Station on Idler Roller 

Shaft for Narrow Paper 

7. Impression Roller 

8. Feedboard Hooks 

9. Ink Handle Lock 

10. Crank 

11. Print Recorder 

12. Print Adjustment Knob 

13. Idler Roller Shaft Screw 
13a. Feed Control Knob 
13b. Locking Screw 

14. Hand Feedboard Hooks 

15. Automatic Feed-Rollers 

17. Feedboard Release Latch 

18. Feedboard Release Plate 


19. Tension Lever Adjusting 

Nut 

20. Cross Rod 

23. Automatic Feed-Roller 
Shaft 

(The screw on outside of 
frame is for removing 
this shaft) 

26. Idler Feed-Roller 
29. Ink Cap 

32. Diaphragm 

33. Inking Rod Handle 

34. Handle Lock 

35. Cam Truck 

36. Brush Clamp Screw 

37. Cradle 

38. Brush Screws 

41. Tank Lock 

42. Vent Valve 

43. Strippers (one on each side) 

44. Stripper Index Plate Clamp 

Nuts (one on each side) 


45. Stencil Adjusting Thumb- Screw 

46. Stencil Strap 

47. Clips (one on each side) 

48. Stencil Clamp 

49. Paper-Weight Yoke 

50. Paper Weight 

51. Paper-Weight Slide Bar 

52. Paper-Weight Rod 

53. Idler Roller Adjusting Nut 

54. Side Guides 

55. Bail • 

56. Tray Extension 

57. Tray Bail Pivot Hole 

58. Width Scale 

59. Side Guide Lock 

60. Stop Lug 

61. Paper Side Guides 

62. Side Guide Clamping Nuts 

63. Paper Back Stop 

64. Paper Back Stop Clamp Nut 

65. Angle Clip (on under side of 

board) * 

66. Notched Side Plates 





















A. B. Dick Company 


Page 7 


The Edison-Dick Mimeograph 



Model No. 78—for automatic feeding 



Model No. 77—for hand feeding 

Note. For instructions having special reference to the No. 77 Mimeograph, see page 27. 






Page 8 


The Service Book 


Contents—by “Steps” and Chapters 

(Complete index at back of book) 


Step Page 

Number Number 

1. Assemble the Machine .... 9 

2. Arrange the Work Required . . 10 

3. Plan the Position on Stencil Sheet . 10 

4. Prepare the Typewriting Machine . 11 

5. Prepare the Stencil with Dermax . . 11 

6 . Typewrite the Stencil .... 12 

7. Remove Stencil from Typewriter . . 13 

8 . Ascertain if Stencil is Correctly Written 13 

9. Correct Errors with Mimeograph Var¬ 

nish .13 

10. Renew the Pad, if Needed ... 14 

11. Supply Ink Tank with Ink ... 15 

12. Ink the Pad Sufficiently .... 15 

13. Throw Back the Cylinder Clips . . 16 

14. Prepare Written Stencil for Cylinder 16 

15. Put the Stencil on Cylinder ... 17 

16. Return the Cylinder Clips . . . 17 

17. Adjust Cylinder Clips According to Im¬ 

pression Roller . , • . . . 17 

18. Position the Stripper Points to Face 

Cylinder Clip Grooves .... 18 

19. Place Supply of Paper on Feedboard . 19 

2*0. Locate the Sliding Paper Weight . . 19 

21. Locate the Paper-Weight Rod . . 20 

22. Regulate Tension of Paper Feed-Plate 20 

23. Release and Start the Feed, Noting Its 

Behavior.21 

24. Regulate the Action of the Paper Feed- 

Rolls .21 

25. Adjust Receiving Tray for the Paper 

Used.22 

26. Raise or Lower the Print on the Paper 23 

27. Set Print Recorder for Number of 

Copies Required.23 

28. Allow Used Stencil to Remain on the 

Cylinder.24 

29. Clean and File the Stencil for Future 

Use . ..24 

30. Use Care in Putting Away the Mimeo¬ 

graph .25 


Chapter Page 

Number Number 

1. The No. 77 Mimeograph and Hand- 

Feeding Methods.27 

2. Cleaning the Mimeograph ... 30 

3. Interleaving Mimeographed Copies . 30 

4. Mimeographing on Narrow Sheets of 

Paper ..31 

5. When the Lines Do Not Print Straight 32 

6 . Typewriter Platens (or Rollers) . . 33 

7. Extremely Dark or Extremely Light 

Prints.33 

8 . Ribbons for Matching Mimeograph 

Work.34 


9. The Care of Dermatype Stencil Paper 34 

10. Removing Lint from the Stencil Surface 35 

11. Uses for Powdered Soapstone in Mimeo¬ 


graphing . 35 

12. Changing Inks.35 

13. Renewal of Automatic Feed-Rolls . 37 

14. Necessary Care of the Impression Roller 37 

15. The Ink-Brush Adjustment ... 38 

16. How, When and Where to Oil the 

Mimeograph. 39 

17. Repair Parts to be Ordered by Numbers 41 

18. Avoid Disturbing Permanent Adjust¬ 

ments of the Mimeograph ... 41 

19. How to Attach Print Recorder to the 

Mimeograph. 43 

20. Motor Drive for No. 78 and No. 77 

Mimeographs. 45 

21. The Edison-Dick Mimeoscope . . 51 

22 . The Mimeoscope Equipment . c 56 

23. Classes of Work (Mimeoscope) . . 59 

24. Signatures and Simple Ruling . . 64 






A. B. Dick Company 


Page 9 


Mimeographing Typewritten Matter 


Follow Step by Step 


NOTE 

In applying these instructions in a case where the Mimeograph 
has been in service “Step 1” may be omitted. The responsi¬ 
bility rests with the operator to see that such a machine is in 
good working order and that it is clean and properly lubricated. 


Step 1 ASSEMBLE THE MACHINE 

If the Mimeograph is delivered in a packing case, 
remove the cover and follow the printed directions 
for further unpacking, to be found just beneath it. 

Attach the automatic feedboard (the shorter of the 
two boards equipped with guides for holding sheets 
of paper), found to be packed in the same case with 
the machine. To attach this board raise paper¬ 
weight yoke (49). Insert hooks on forward end of 
board under the second cross rod and allow board 
to rest on the first cross rod (20), so that backs of the 
hook plates fit into the slots on rod (20) and the 
board lies level. This board must drop loosely into a level position without any 
forcing. Slide the board from side to side on the cross rods until its true location 
is found and it drops freely into its proper place (Note 1 ). 

The receiving tray, which receives the printed copies as they are discharged, will be 
recognized by its tall side guides. The flat center strip of metal has lugs bent up at 
one end. Hook these lugs under the tie-rod found 
below the rubber impression roller (7). 

To attach the hinged wire tray “bail” hold it in 
upright position with the small wire swinging 
toward the cylinder and press the ends together 
so that they will enter the holes (57) on the upper 
edge of the outer end-piece of tray (Note 2). 

If the machine has motor equipment, for its assem¬ 
bling see Chapter 20, page 45. 

WRONG-METHOD RESULTS 

Note 1. Forcing the feedboard down to the level position tends to bend the rod supporting the paper feed- 
plate and causes binding which impairs the proper action of the automatic feed. 

Note 2. Where the tray is used without the advantages of the bail to guide downward and steady each single 
sheet as it falls, it may require a considerable amount of unnecessary handling to gather and straighten 
the sheets. 



Installing the Receiving Tray 



Attaching the Automatic Feedboard 


For Reference Chart, showing all parts of the Mimeograph, see page 6. 














Page 10 


The Service Book 


Step 2 ARRANGE THE WORK REQUIRED 

Typewrite the original matter to be stenciled on a sheet of paper the same size as 
those on which the copies are to be printed. The more carefully this preliminary 
copy is planned and written, the better the final results will be (Note). 

WRONG-METHOD RESULTS 

Note. A disregard of the above precautionary method of planning is responsible for much ill-placed and 
unattractive work, with line lengths and spacing arrangements entirely out of proper proportion to the 
size or shape of the impression paper used. 


Step 3 PLAN THE POSITION ON STENCIL SHEET 

Place top edge of sheet of impression paper to be used on a line with the small corner- 
marks (found on the stencil sheet stub, about inch above the perforations) or, 
if an approximation will serve, on the perforated line, and observe opposite what 
number on the margin of the backing sheet the writing should be started. Make a 
mental note of this position, or with red ink and pen actually mark the position on the 
surface of the blue dermatype. It is also well to make some mark indicating the side 
margins desired. If the copies are to show a certain width of margin, it should be 
provided for at the time of writing the stencil (Note 1). 

If the impression sheets to be used are specially ruled or printed, and the typewritten 
matter is required to fit into certain definite spaces or columns (“registering” with 
them, as it is called), place one of these impression sheets between the backing 
and the stencil sheet, face upward and suitably located as to height, and make all 
marks needed on the blue sheet as a guide in writing the stencil, exactly in accord¬ 
ance with the form, as it is there seen showing through. Remove the impression 
sheet form before proceeding further (Note 2). Where much of this registration 
work is to be done on the same blanks, we print for our customers, at a nominal 
price, the needed form directly upon the backing sheet, thus saving for the operator 
both time and trouble. 

WRONG-METHOD RESULTS 

Note 1. If stencil matter which is intended to appear on the printed sheets with a wide margin on one side 
is erroneously written on the stencil sheet in a centralized position—that is, without this same side- 
margin allowance—any attempt to effect a margin on the copies by simply resorting to feeding the 
impression sheets to one side on the feedboard may result in the sheets being caught and crumpled 
by the stripping devices while being printed and discharged from the machine. 

Note 2. Substituting guesswork methods for the above definitely prescribed and sure plans for properly 
placing the typewritten matter leads to many unsuccessful efforts on the part of operators to print 
an incorrectly laid-out stencil in the desired correct position on the paper. The Mimeograph is not 
provided with adjustability sufficient to correct such faulty operation. 


SPECIAL NOTE 

To Users of the Hammond 'Typewriter 

Steps 4, 6 and 7 do not apply where the Hammond Typewriter is em¬ 
ployed in writing stencils, except as to the general principles involved. 

The Hammond Typewriting Machine requires the use of specially 
prepared Dermatype Stencil Paper. In ordering this material 
specify “Hammond” in addition to giving the Catalog Number of 
the Stencil Sheets desired. A special Hammond Direction Sheet 
is included with the stencil paper, or will be mailed gratis, on request. 


For Reference Chart, showing all parts of the Mimeograph, see page 6. 







A. B. Dick Company 


Page 11 


Step 4 PREPARE THE TYPEWRITING MACHINE 

Shift the ribbon out of printing position. If there is no shifting device on the typewriter 
remove the ribbon entirely. Clean the type thoroughly. First cover the keys with 
a sheet of paper held in position by creasing it down over the top row. With a type 
brush, having very stiff bristles, brush the type until the inky ribbon-fiber has been 
entirely removed from it. An ordinary pin may be used to pick the type before 
brushing. If, after brushing, the type are wiped clean with a cloth saturated with 
alcohol, the stencil will be free from ribbon lint and easier to read as it is being 
written ( Note ). 


WRONG-METHOD RESULTS 

Note. Merely rubbing the type with a cloth, without thoroughly brushing, has little or no cleansing effect. 
Where poor and illegible copies have been obtained, the result has often been attributable to clogged 
and gummed-up type. 


Step 5 PREPARE THE STENCIL WITH DERMAX 

Dermax is a chemical preparation for the specific purpose of converting dermatype 
stencil paper to the impressionable condition necessary to obtain perfect results, and it 
is the only agent that will maintain that condition while the stencil is being written. 
The proper application of dermax is one of the most important steps in the mimeo¬ 
graph process. 





For Reference Chart , showing all parts of the Mimeograph, see page 6. 


Position for rolling up the Stencil Sheet 


of the backing 
sheet, but avoid getting any dermax on the under 
side (Note 4). With the thumb and finger of the left 
hand extended hold down the stencil stub and with 
the right hand unroll the stencil sheet. While so do¬ 
ing, take up any fulness and slightly stretch the now 
moist stencil sheet, by applying a light tension and 
a gentle downward pull every two or three inches. 
(Note 5). If a dermatype sheet, due to extreme age 
or any other cause, feels dry to the touch, or stencil 
writing is to be done in a hot atmosphere, beneath 

an electric fan, 


Place the stencil paper with its blue dermatype side 
uppermost on a sheet of paper or blotter, somewhat 
wider than the backing (Note 1 ). Take the derma¬ 
type handy roller supplied with the equipment 
and on it smoothly roll the stencil sheet up from the 
backing, for its entire length {Note 2). With the 
dermax brush, spread dermax {Note 3) freely over 
the face of the backing sheet. Make brush strokes 
first vertically and then horizontally. Apply dermax 
to the edges 


Dermaxing the Stencil Backing 


Method of smoothly relaying the Stencil Sheet 


or under any especially drying conditions, additional 
dermax should be brushed upon the top surface of 
the stencil sheet, and then after a minute or two 
the excess blotted off before the sheet is inserted 
in the typewriting machine {Note 6). If preparing 
for long full pages of work or for very difficult stencil 
matter requiring much time to write, apply the der¬ 
max liberally on top of the stencil as well as on 
the backing and blot off excess as directed. (See 
paragraph entitled “The exceptional case” on page 
13.) Avoid using any other dermax brush than that 
furnished with the Mimeograph {Note 7). 












Page 12 


The Service Book 


WRONG-METHOD RESULTS 

Note 1 . Otherwise the dermax will get on the desk or table top. 

Note 2. Where the handy roller is not used, smoothing out the stencil sheet with the hand may cause injury 
to the dermatype coating. (List No. of handy roller, 606.) 

Note 3. The use of any substitute for the dermax softening fluid, is attended with disadvantages which 
condemn the practice. 

Note 4. Wherever dermax gets on the under side of the backing sheet, the written work opposite such places 
will be heavy and imperfect. 

Note 5. If the blue stencil sheet is laid loosely or unevenly against the backing, the lines of the printed copy 
are likely to sag or be irregular. In unrolling the sheet do not press the roller against the backing— 
it will cause the needed dermax to be squeezed out along the edges. 

Note 6. If this direction is disregarded the dermatype sheet is likely to become too dry before the stencil 
writing is finished and cause the centers of certain letters to cut out and other letters to lack dis¬ 
tinctness. 

Note 7. The stiff bristles of a coarse brush roughen up the tissue surface of the backing sheet, causing an 
inferior stencil. 


Step 6 TYPEWRITE THE STENCIL 

Place the dermaxed stencil sheet, complete with its backing, in the typewriting machine, 
and write upon the blue dermatype surface, with a careful, even touch. If the platen 
(roller) of the machine is that ordinarily used in office work (medium hard) and 
the type in reasonably good condition, the accustomed touch of the average operator 
will be of sufficient force to produce a clearly made stencil. The writing on the 
stencil sheet will always be legible, if the stencil is perfectly written. 

If—as the writing progresses—the appearance of the stenciled matter becomes 
gradually less distinct, it will be evident that the backing sheet has not had a sufficient 
supply of dermax to retain the blue stencil sheet in a proper moist condition a sufficient 
length of time. A redermaxing should follow this discovery, as instructed herein, 
and in no other way. Remove the stencil from the typewriting machine {Note 1 ) 
and, without lifting the written portion of the blue sheet from the backing, apply 
dermax to its top surface. At once blot off the excess and replace the stencil in the 
typewriting machine. If, due to extreme delay in completing the stencil, the un 
written portion of the blue sheet has become so dry that it no longer clings to the 
backing, then lift such portion, redermax that part of backing beneath it, respread 
the blue sheet and proceed with the writing. 

If it be noticed that the capitals M, W and E or such signs as $, &, # and % or 
letters especially worn on the typewriting machine are indistinct on the written 
stencil, strike these lightly a second time, and thus make them equal to the 
others in effect {Note 2). 


WRONG-METHOD RESULTS 

Note 1. We particularly caution against brushing a new supply of dermax over the surface of the stencil sheet 
while it is held in the typewriting machine. This is a very mussy proceeding; and, furthermore, one 
in which the dermax is necessarily freely carried to and deposited on the feed-rollers. 

Note 2. A common error into which stencil writers fall is that when noting a lack of legibility in the case of 
certain letters, they evade that little extra attention these may need, and proceed to strike every letter 
an especially hard blow. The result is work altogether too heavy to be attractive and utterly lacking’ 
in finished appearance. 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 






A. B. Dick Company 


Page 13 


Step V REMOVE STENCIL FROM TYPEWRITER 

When the stencil is completely written and ready for removal from the machine, open 
the paper-release and lift out the stencil, instead of rolling it out (Note 1). 

THE EXCEPTIONAL CASE—When a stencil sheet has been very freely dermaxed 
over the entire surface of the backing, as a provision for a very long page, or other 
elaborate work, the above method will not afford a sufficient safeguard against squeez¬ 
ing dermax onto the paper feed-rollers of the typewriting machine. A method that 
will protect the typewriting machine in this regard is to insert the lower end of the 
stencil sheet, after dermaxing, into an ordinary No. 9 or 10 envelope in such a manner 
that the gummed flap can be made fast to the back of the backing sheet. As the written 
stencil is removed from the machine the envelope will then follow so as to catch and 
retain all the squeezed-out dermax, as in a bag, leaving the rollers clean. In the absence 
of a large envelope, an absorbent paper folded properly may be improvised and 
attached with any adhesive so that it will overlap and follow the stencil through the 
feed-rolls of the machine. 

Pass a sheet of porous or absorbent paper through the typewriting machine and thus 
absorb from the surface of the feed-rolls any deposit of dermax which may be 
there (Note 2). 

WRONG-METHOD RESULTS 

Note 1 . When an excess of dermax still remains upon the backing surface after the stencil has been written, 
rolling the stencil entirely through the machine is likely to cause dermax to be pressed out on both 
platen and paper feed-roll surfaces. 

’ Note 2. A persistent habit of excessive dermaxing, together with a careless indifference to this simple method 
of absorbing any fluid deposited, may make it necessary now and then to clean and relubricate the 
typewriter-carriage and paper feed-roll mechanism. There is little excuse for such a condition. The 
preventative method, as above instructed, is recommended. 


Step 8 ASCERTAIN IF STENCIL IS CORRECTLY WRITTEN 

Proofread or compare the written stencil with the original copy. If found to be 
correct, raise the stencil from the backing and place a sheet of paper underneath, 
allowing it to remain until ready to make the prints. The interposed sheet of paper, 
absorbing the remaining dermax, quickly converts the stencil from its moist and 
somewhat tender condition to its normal state, in which it can more readily be 
handled without damage (Note). 

If any pieces of paper, cut from the thin paper surface of the backing, adhere to the 
stencil on the under side they should be removed by pressing a moistened finger-tip 
against them. 

WRONG-METHOD RESULTS 

Note. If the stencil be allowed to fully dry without this separating sheet it may adhere to the surface of 
the backing, so that when necessary to detach it, some distortion of the stenciled letters may result. 


Step 9 CORRECT ERRORS WITH MIMEOGRAPH VARNISH 

To make a correction on the stencil, first turn the platen until the line containing the 
error stands apart from both ribbon guide and indicator. Close the openings of the 
incorrect letter or word by gently rubbing them with any hard, smooth object. For 
example, a small wire clip will serve the need (Note 1 ). Remove excess varnish 
from the brush, first by pressing it against the neck of the bottle, and then against 
a piece of paper or card (Note 2). Apply a thin coating to the error, wait a moment 
or two, and then touch the freshly varnished surface with the moistened tip of 
the finger (Note 3). Write in the correction without further delay, using a light 
touch on the keys. Unless necessary to use the stencil immediately, raise it from 
the backing, and insert a piece of paper as directed. Dermatype corrections should 
be made with mimeograph varnish (List No. 260 ) and varnish brush (List No. 262- 
brush and cork combined). 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 








Page 14 


The Service Book 


WRONG-METHOD RESULTS 

Note 1 . If the varnish is allowed to penetrate through and reach the backing, it may so adhere to it that the 
correction is likely to be injured when the stencil sheet is lifted. 

Note 2. Varnish thickly applied will not dry fast enough for stenciling, nor will it retain a correct impression 
of the type, when written over. If varnish be retained in a bottle not tightly corked, it will soon 
thicken and become unusable. In such an emergency, pour in a little alcohol to thin it and stir 
thoroughly. 

Note 3. If not thus made moist the varnish may stick to the face of the type. 


Step 10 RENEW THE PAD, IF NEEDED 


No general rule can be given stipulating the exact time to change, the ink pad. 
Experience will enable the operator to judge the condition and determine the proper 

time at which it should be done. 



Putting on Ink Pad 


The practice of renewing the ink pad at regular inter¬ 
vals, whether the Mimeograph is frequently used or 
not, is advantageous. The pad that has been on the 
machine for weeks in an inked condition should be 
renewed without question. 

The mimeograph ink pad, when thoroughly saturated 
with ink, is in reality the secondary ink reservoir and 
it deposits the ink through the stencil on the impres¬ 
sion paper by capillary attraction and light pressure 
(Note). As long as the ink in the pad retains its 
original consistency, it will flow in and through the 
pad and by it be properly distributed, but if through 
long exposure some of the liquid ingredients of 
the ink evaporate, or if when making long runs the 
pad is called upon to convey ink for a continuous 
period, some of the fibers of the cloth may become 
overimpregnated with the ink coloring matter. Either 
condition prevents the flowing of the ink and there¬ 
fore necessitates changing the ink pad. (Ink pads for 
No. 78 or No. 77 Mimeographs, List No. 781.) 


Before placing a stencil on an ink pad that has had considerable service, raise one 
end of the pad from the cylinder and shake it gently. This has a tendency to 
loosen the clogged fibers of the cloth and thereby assures good distribution of the 
ink. In making very long runs the clearness of the print is improved by occasionally 
resorting to this practice. 

To put on a new pad, insert the pad rods through the hem found at each end of the 
pad, and, with the hinged clips thrown back out of the way, attach the pad to the 
cylinder with its fuzzy side against the perforated metal surface. In attaching the 
pad rods by which the pad is stretched and held in position, the far end of the rod is 
pushed into the round socket for the purpose and then the near end slipped into its 
corresponding groove. Removal of a pad is merely a reversal of the operation. This 
attaching is easily accomplished. No wrinkles must be allowed to remain. 


WRONG-METHOD RESULTS 

Note. Even a well-written stencil will not deliver good work, if the ink in the pad is retarded in passing 
through the mesh of the cloth. Never undertake to increase the tension of the impression roller (7) 
as an expedient to evade proper renewal of a pad, in which the ink has clogged. Forcing the flovf 
of ink by excessive roller pressure will still further close the mesh of the cloth and poor and unsat¬ 
isfactory work will follow. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 











A. B. Dick Company 


Page 15 


Step 11 

SUPPLY INK TANK WITH INK 

To fill the fountain turn the cylinder so the pad 
covered portion is downward. Push fountain to 
the further end of its cradle (37), so locating it 
that the fountain ink cap (29) is uppermost. 
Unscrew the fountain ink cap. Lower the ink 
can to a position immediately over the opening, 
to avoid spilling, and pour until the tank is nearly 
full. Replace fountain ink cap and screw on 
tightly. 


CAUTION 

The proper mimeograph inks, furnished by us, are described by numbers in our price-list. The per¬ 
fection of these inks is the result of extensive and careful study of, and vital interest in, their work¬ 
ing qualities. Entirely successful. results from their use in accordance with directions are in all 
cases guaranteed. The chemical ingredients of mimeograph inks, dermax and dermatype stencil 
paper will not cause any reaction upon each other, while operating difficulties of various kinds follow 
the use of poorly developed inks. 



Step 12 INK THE PAD SUFFICIENTLY 


To use the ink fountain, with its mechanical ink¬ 
ing brush, place the left hand on the rim of the 
cylinder to steady it, grasp the ink rod handle 
(33) with the right hand, lift it from its lock (9) 
and draw it forward, until the motion of both 
fountain and brush is found to be controlled. As 
they come under control, the tank lock (41) will 
be seen to unlock itself—by rising—and the vent 
valve (42) may then be turned to the left and the 
ink thus allowed to flow through the brush into the 
cylinder {Note 1 ). When a sufficient supply of ink 
is released turn the vent valve back again—to the 
right—to the stop pin. In spreading the ink give the brush a forward, backward 
and side motion as well {Note 2 ). 

Where the pad is partially inked from having been already in service, the supply will 
merely need replenishing where the previous work has depleted it. A glance at the 
outer surface of the pad will generally suggest by its drier appearance in certain spots, 
where a little ink can advantageously be applied. However, no reliable estimate 
of the ink needed can be made until after the stencil is finally placed on the cylinder 
and trial prints run off, after which additional ink may be supplied where needed. 

In all cases the forward end or head of the pad should be inked, in order to cause the 
stencil to cling closely, and avoid wrinkling. In inking to the extreme head of the pad, 
it can be done more conveniently if the handle lock (34) is pulled and operating 
crank (10) is allowed to hang down loosely. Release ink as near the head of the cylinder 
as possible; bring the brush behind the ink and force it forward, then a side movement 
will distribute it. The same method at the foot of the cylinder. When the ink is 
distributed, depress the tank lock (41) and this act will permit the return of the ink 
rod handle to the handle lock (9). This cannot be done unless the vent valve (42) 
is entirely closed. Never force back the ink handle. It will slip into place easily, if 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 












The Service Book 


Page 16 


above directions are followed. Revolve hand crank (10), press it toward the 
cylinder, and it will regain its former adjustment in readiness for the printing 
operation. 

WRONG-METHOD RESULTS 

Note 1. If the ink supply in tank, when released, does not flow out freely, see if the air-vent hole in the nm 
of vent valve (42) is open. If not, force a pin in to clear it, and the ink will then flow. 

Note 2. A crude method of pouring ink from the can directly into the cylinder, and then spreading it about 
with the brush, employed by certain carelessly disposed operators, is reflected in the soiled and mussy 
appearance of both fountain and cradle, and in excessively inked prints. A similar abuse and like 
departure from all cleanly methods consists in the use of a hand brush employed to spread a quantity 
of ink over the outer surface of the pad each time before covering it with a stencil. No finished 
quality of work can be obtained through such methods. First prints will be blotchy and heavy and 
succeeding copies light—no uniformity being attained. 


Step 13 THROW BACK THE CYLINDER CLIPS 



Before attaching stencil to the mimeograph cylin¬ 
der the two grooved hinged clips resting against 
its outer surface must be raised and thrown back 
until they lie against the tie-rod (Note). 


WRONG-METHOD RESULTS 

Note . If these clips instead of being thrown back as directed 
are allowed to remain in a standing position while 
the stencil is being attached, they are likely to 
be caught and broken off should the cylinder be 
turned backward. 


Throwing back the Cylinder Clips 


Step 14 PREPARE WRITTEN STENCIL FOR CYLINDER 

With the stencil raised from the backing (after 
writing), bend the stub backward and forward at 
the perforations to crease it for easy tearing. 

Place stencil on desk or table with the backing 
underneath. Throw blue stencil backward over 
the stub, and with thumb and fingers of the left 
hand spread well apart, hold down both stub and 
stencil firmly. With right hand hold the backing 
in a low position, and starting from the further end 
of the line of perforation, pull the backing apart 
from the stub (Note 1). 

Before the written stencil can be used its backing must be thus detached, and the 
stub, to which the stencil is fastened, should be bent to conform to the cylinder surface. 

To properly bend the stub, crease it from one end to the other toward the printed 
side on a line with the word “Mimeograph” printed near the center (Note 2). 

WRONG-METHOD RESULTS 

Note 1. Any method of detaching the backing without first creasing it to weaken the perforations, results in 
tearing away portions of the stub, or loosening the stencil sheet, where fastened. These dangers are 
exaggerated if the operator tears off the backing sheet after the stencil has been spread upon the 
cylinder. 

Note 2. Where the stub is attached without first creasing it, an undue strain is put upon the button-ho^s 
particularly during long runs. A stencil left to adjust itself on the cylinder surface, rather than by 
creasing the stub, may develop a “fulness” when printing, which will distort the top lines of the work. 

For Reference Chart , showing all parts of the Mimeograph , see page 6. 



Removing Backing from the Stencil 












A. B. Dick Company 


Page 17 


Step 15 PUT THE STENCIL ON CYLINDER 


With the pad properly inked as shown in Step 12, 
suspend the stencil in the left hand by its stub and 
with right hand turn the hand-crank until it takes 
a directly upright position, with the attaching but¬ 
tons in line with the wooden handle of the crank. 
With the right hand, take hold of the lower end 
of the stencil and lift it higher than the stub. 
Holding it clear of the ink pad, attach the button¬ 
holed stub to the buttons. Now with the left hand, 
turn the crank to a right-hand horizontal position, 
and lean against the crank handle to prevent the 
cylinder from revolving. With the left hand take 
hold of the farther corner of the lower end of the stencil, at the same time changing 
the position of the right hand so that it, in turn, holds the lower near corner; in which 
position gently stretch the stencil and lower its upper half (approximately) to contact 
with the pad. Release the hold upon the stencil and by gently pressing the thumb 
or finger-tips against the margins of the stencil smooth out any wrinkles that may 
be found in the upper half (Note). Then swing 
the crank downward to the left until it reaches the 
left-hand horizontal position, again lean against the 
crank handle, and lift the stencil (this time only 
the lower half) and proceed to smooth it out as 
before. Lift the stencil clamp (48) by means of 
its central finger-piece, and make the lower end of 
the stencil fast beneath it. 

N. B.—When using short stencil paper, which does 
not extend to the stencil clamp, lay on the ink pad 
a piece of blank paper of sufficient length to extend a 
short distance under the lower edge of the stencil and 
far enough down to permit clamping with clamp (48). 

WRONG-METHOD RESULTS 

Note. An effort to smooth out a very pronounced wrinkle or overlap in the stencil by a firm pressure applied 
with the hand on the stencil surface may possibly damage the stencil and thereby blemish the print. 




Attaching Stencil to the Cylinder Buttons 


Step 16 RETURN THE CYLINDER CLIPS 

Bring forward the cylinder clips to a position resting against the cylinder, where 
they will rest on the edges of the stencil sheet just previously attached (Note). 

WRONG-METHOD RESULTS 

Note. Failure to return the clips to the cylinder surface will allow the impression sheets to cling to the stencil 
surface. Sheets thus allowed to cling to the stencil, in printing, will frequently get caught and become 
crumpled in discharging, instead of falling into the tray. 


Step 17 ADJUST CYLINDER CLIPS ACCORDING TO IMPRESSION ROLLER 

The factory adjustment is properly made for the ordinary 83^- 
inch width of paper. Only special work calls for readjustment. 

The cylinder clips are readily movable to the right or left. They should be fastened 
in such a position that when the cylinder is revolved they will pass beyond the ends 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 













Page 18 


The Service Book 


of the rubber impression roller (Note 1) at a distance of about one-quarter of an 
inch, but not farther (Note 2 ). This is the usual or standard adjustment. 

To conveniently gauge this distance, and adjust the clips accordingly, turn the cylinder 
until the clip adjustment thumb-nuts are immediately above the impression ro er. 
Loosen, move, and tighten them while so positioned. 

The original method of adjusting clips and strippers in accordance with the scale 
numbers on the supporting bars, as set forth in other directions, will serve tor 
making the above standard adjustment if fully understood and followed. 


THE EXCEPTIONAL CASE, WHERE NARROW PAPER IS USED 

The standard width of office letter-paper, and of impression paper ordinarily used in 
mimeographing, is &V 2 inches, and the above approximate adjustment of the cylinder 
clips presumes the use of such full width material. But where 8-inch impression paper is 
in use, the clips should be moved closer to the ends of the roller, in order to engage 
with positiveness the edges of these narrower sheets. The clips should, however, be 
positioned a full i^-inch distance from the roller ends. If the printed sheets are 
creased near their side edges, move the clips a trifle farther from the roller ends. 


WRONG-METHOD RESULTS 

Note 1. If they ride on the roller they will prevent it from the contact necessary to print copies. 

Note 2 If further away than this they will either pass altogether beyond the edges of the impression sheet, 
* or will at least take an insufficient hold upon its edges to serve the purpose for which they are designed. 


Step 18 POSITION THE STRIPPER POINTS TO FACE 

CYLINDER CLIP GROOVES 

Clips lift the printed sheets from the stencil surface, 
enabling the strippers to guide them down to the tray. 


The strippers (43) also are readily movable to the right or left, and they should be 
positioned so that each stripper faces or matches the corresponding cylinder clip, 
and as the cylinder turns, the stripper points will follow the center of the channels 
in the clips without actual contact (Note 1). The lateral position of these strippers, 
in relation to the ends of the impression roller, is thus wholly determined by the 
position of the previously adjusted clips (Note 2). 


PRECAUTION: STRIPPER ADJUSTMENT AS TO HEIGHT 

Aside from the above right and left location of the stripper points, they must be main¬ 
tained in their correct position as to height. In their original form, or proper state 
of repair, they, of themselves, maintain a fixed height in accordance with the factory 
adjustment; yet, if the machine has had promiscuous handling, it may be a wise precau¬ 
tion to inspect this feature, as follows: See that the points of the strippers, as the cylinder 
is revolved, just miss the flat metal surface of the clips (Note 3). In such an investiga¬ 
tion it is obviously necessary that the curvature of the clips themselves should exactly 
conform to the curvature of the cylinder. Therefore, if for any reason they have 
become arched, they can be raised and carefully bent into proper curvature, permitting 
them to rest firmly against the cylinder. See, however, that the star-wheel members 
do not come in contact with the stencil or pad. 


WRONG-METHOD RESULTS 

Note 1. If the stripper points be allowed to come in contact with the raised sides or rims of the clip they wil 
wear off to a sharp, jagged condition—a menace to impression sheets and fingers as well. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 







A. B. Dick Company 


Page 19 


Note 2. If the stripper points are erroneously positioned so as to face the impression roller the printed sheets 
will be caught, crumpled and torn, instead of being properly discharged; with an attendant danger of 
the stripper point grooving and spoiling the rubber roller. If they are positioned outside of, or entirely 
beyond, the limits of the clips, they will be inoperative. 

Note 3. A contact adjustment of the strippers with the clips causes friction with the clip surfaces and conse¬ 
quent wearing to a sharp condition. Should the stripper points be allowed to press against the clip 
surfaces, they will spring against the stencil when they pass beyond the clip, and thus will rip it 
along its edge. A low adjustment of the strippers will result in the stripper points passing so far from 
the clip surfaces that they afford no protection and consequently catch the impression sheets and cause 
them to be torn. 


Step 19 PLACE SUPPLY OF PAPER ON FEEDBOARD 

Lift paper-weight slide bar (51). Press down release 
latch (17). Prepare, by “combing” apart, a quantity 
of the impression paper to be initially used, equal to 
about 3^-inch thickness (Note 1). 

This “combing” operation, which should not be 
omitted, consists in holding the paper pile loosely 
at both ends, and proceeding to bend the sheets 
backward and forward, thus causing them to 
“creep,” until their edges separate and are thrown 
out of line. Again straighten the pile and place it 
upon the feed- 
board as far for¬ 
ward as it will go, in a position carefully centered 
from right to left (Note 2). Bring up the side 
guides to contact with the paper pile, but see that 
the sheets are given ample freedom for feeding. 

Then set the back stop (63) a full quarter of an 
inch from the paper (Note 2). If the impression 
sheets are particularly heavy or stiff, this quarter- 
inch may be increased to three-eighths of an inch, 
so that they can more readily be lifted by the 
feed-rollers. 

WRONG-METHOD RESULTS 

Note 1. In feeding paper that has not been “combed” two or more sheets occasionally cling together when 
lifted bv the feed-rolls and are thus forwarded as a single sheet. The fault in compressed paper as it 
comes from the paper knife, or sheets which have been punched or perforated, is remedied by proper 
combing. 

Note 2. If the paper is not thus centered, the edges of the sheets, while printing, will not be properly engaged 
by the clips and strippers of the Mimeograph, and catching and crumpling of the sheets may result. 

Note 3. Where the back stop is erroneously placed against the pile of paper, the sheets will be so crowded 
forward as to cause more than one sheet to be fed at a time. 



Set Side Guides in loose contact 
with paper pile 



Method of "combing” paper for 
inserting in machine 


Step 20 LOCATE THE SLIDING PAPER WEIGHT 

It keeps the sheets from bulging. 

Set the sliding paper weight (50) on the bar (51) in accordance with the length of 
the impression paper to be used. The longer the paper the farther the weight should 
be from the paper-weight yoke (49) and vice versa. For legal size paper, place the 
weight at the end of bar farthest from the yoke. For letter size paper, place the 
weight about four inches from the yoke. For especially short sheets of paper, place 
the weight at the end of the bar nearest the yoke (Note). 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 











Page 20 


The Service Book 


If the bar and weight do not drop quickly (and this would only occur when driving the 
machine at excessive speed), the remedy will be found either in less speed, or in 
a complete lubrication of the bearing points in any way connected with the paper¬ 
weight yoke (49). Pay particular attention to oiling the operating cam and cam- 
roller on the far side of the machine and other moving parts, including the engaging 
points of the two spiral springs and the lower shaft bearings. 

WRONG-METHOD RESULTS 

Note. If the weight is carelessly located too near the yoke for the length of paper being used, it will on its 
downward motion come to rest on the end of the sheet being forwarded and will thus retard the 
feeding operation. 


Step 21 LOCATE THE PAPER-WEIGHT ROD 

It bends the sheets to aid their forwarding. 

When using ordinary qualities of office papers place 
the round paper-weight rod (52) in the first pair 
of opposite holes in paper-weight yoke (49)—those 
nearest the feed-rolls. If using paper that is of 
heavy weight, or paper more difficult to bend, then 
in the second or third pair of holes (Note)* A slight 
endwise pressure will depress the plunger in one end 
of the rod to permit either its removal or insertion. 


WRONG-METHOD RESULTS 

Note. Locating this paper-weight rod farther back than the paper in use demands gives to the sheets, as 
they are forwarded, an amount of unnecessary freedom that will lessen the positiveness and regu¬ 
larity of the feed, and will also affect the accuracy of registration. 



Step 22 REGULATE TENSION OF PAPER FEED-PLATE 

It raises the paper into contact with the feed-rolls. 

The forward extension of the feedboard (the slanting metal surface) is called the 
feed-plate, and this plate rises and falls under a tension controlled by the tension 
lever adjusting nut (19), the normal adjustment being when the face of the nut is 
even with the end of the stud on which it turns. If necessary, alter this normal 
adjustment, as follows: 

As the paper feed-rolls in the course of time through wear become smaller in diameter, 
thereby lessening their efficiency, the effect of this reduction in size can be offset 
by turning up tension nut (19), thus increasing the upward pressure of the feed-plate. 

It is purposely devised that the last few sheets will always remain on the feed-plate, 
to act as a cushion which the feed-roll action requires. 

When the feed-rolls ultimately become so worn that they no longer can be made 
efficient by means of the tension nut they should be renewed, and the substitu¬ 
tion of new feed-rolls will necessitate the return of the tension nut (19) to its original 
normal adjustment; that is, with face of nut even with the end of stud (. Notel ). 

N. B.—The feed-rollers are made of a quality of rubber intended to wear away grad¬ 
ually so as to maintain a constant gripping surface to meet the surface of the impression 
paper and raise the top sheet. Without this “wearing” the rollers would become smooth 
and ineffective. (See, also, page 22.) 

THE EXCEPTIONAL CASE, WHERE VERY LIGHT PAPER IS USED 

In feeding extremely light-weight papers, those not only thin but at the same time soft 
and flexible or light papers having a rough finish, such as linen manifolding stock, the 
feed-rolls require the least possible length of time in contact. Therefore, turn control 
knob to its limit, to the right. (See, also, page 22.) 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 









A. B . Dick Company 


Page 21 


WRONG-METHOD RESULTS 


Note 1. If after installing new feed-rolls the tension nut (19) is allowed to remain screwed up, so that the stud 

GS ~J e 7° nd f ace nu V the pressure on the paper feed-plate will cause the feed-rolls to 
pick up and forward several sheets of paper at a time. 


Note 2. If tension nut (19) be released to this extent, when the feed-rolls are much worn, the feed may miss 
a sheet occasionally, making it necessary to retighten the tension nut somewhat to compensate for 
the condition of the worn feed-rolls. 


Step 23 RELEASE AND START THE FEED, NOTING ITS BEHAVIOR 


With the right hand, hold the hand-crank in a 
downward position, with the closed part of cylin¬ 
der uppermost (Note 1). 

With the left hand, release latch (17) and the 
paper-weight lever simultaneously. As the crank 
is turned, observe whether the feed is regular in 
its operation, one sheet at a time. To correct any 
irregularity of this nature, adjust the control knob 
—explained under Step 24. 

When the supply of sheets on the feedboard is low, 
press down feedboard release latch (17), lift the 
paper weight (50), and add more paper. 

While the supply of paper is being added, the cylinder, if motor driven, may continue 
turning. It is far better to replenish the supply of paper often rather than to overload 
the feedboard with too many sheets at one time (Note 2). The replenishing should 
be done before the Mimeograph stops feeding for lack of paper supply. 

WRONG-METHOD RESULTS 

Note 1. While the automatic feed may be started from other positions of the cylinder than the one above 
prescribed, there are certain starting points which afford a less positive beginning. The right way, 
as proposed, involves the least loss of time. 

Note 2. It is difficult to keep an excess of paper uniformly controlled. A thick pile of sheets offers to the 
feed-rolls a cushion without resistance for their proper action, and the top sheets, moreover, will be 
inclined to override the back stop. Time is thus lost before the pile of paper is brought down to a 
height that can be handled to advantage. 



Starting the Paper Feed 


Step 24 REGULATE THE ACTION OF THE PAPER FEED-ROLLS 

With the closed part of cylinder uppermost, ad¬ 
just the feed control knob (13A), which regulates 
the length of time the paper is held in contact with 
the feed-rolls, or in other words, the length of time 
given the feed-rolls to pick up a sheet before the 
feed-plate, with the paper, drops entirely away from 
them. Turning this knob to the right shortens 
the time of this contact, while turning it to the 
left lengthens the time accordingly. 

If more than one sheet is being lifted on account 
of length of contact, pull out control knob, and, turning it to the right , make a one- 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 



Adjusting the Feed Control Knob 














Page 22 


—The Service Book 


notch adjustment. If feeding two or more sheets continues, turn the knob still 
another notch to the right (Note). 

N. B.—“One notch” is indicated by marks appearing on the inner edge of the con¬ 
trol knob, yet it is by aid of the sense of touch, or feeling these notches as the knob 
is turned, that such adjustments are usually made. 

If single sheets fail to feed uniformly—one now and then being missed—make a 
similar one notch adjustment to the left. Should the missing of an occasional sheet 
in feeding still continue, turn the knob another notch to the left. 

N. B.—The feed-rollers are made of a quality of rubber intended to wear away grad¬ 
ually so as to maintain a constant gripping surface to meet the surface of the impression 
paper and raise the top sheet. Without this “wearing” the rollers would become smooth 
and ineffective. 

When the feed-rolls are new, turning the knob to the first adjustment to the left, 
from the extreme right-hand limit to which it is possible to turn it, will, in the case 
of most grades of paper, effect uniform feeding. But the more usual resting place 
of the control knob (assuming that the feed-rolls have had a certain amount of wear), 
is in the second adjustment to the left, from the extreme right-hand limit of turning. 
In the case of especially heavy, smooth, or stiff papers, or of any paper for other 
reasons hard to feed, the necessity for going to the third adjustment , or farther, 
can generally be avoided by additional tension of nut (19). 

THE EXCEPTIONAL CASE, WHERE VERY LIGHT PAPER IS USED 

In feeding extremely light-weight papers, those not only thin but at the same time 
soft and flexible or light papers having a rough finish, such as linen manifolding stock, 
the feed-rolls require the least possible length of time in contact. Therefore, turn control 
knob to its limit, to the right. 

The Idler Feed-Roller: If, as single sheets are forwarded between the idler feed- 
roller (26) and the feed-roll in contact therewith, there is a lack of positiveness in feed¬ 
ing, the adjusting-nut (53) should be screwed down to increase the tension. Only very 
stiff paper will require this change, while for the lightest papers its adjustment should 
be the reverse. The adjusting screw and nut are not intended to be rigidly fitted to the 
frame. Do not screw down with the intention of making rigid. 

WRONG-METHOD RESULTS 

Note. The difference in behavior resulting from a “one notch” adjustment, either to the right or left, is 
considerable, so that where the directions as to the number of notches are exceeded, the feeding 
is likely to revert to the opposite extreme in behavior, no less troublesome than that which endeavor 
is being made to correct. After each notch of adjustment watch carefully the effect. 


TRAY FOR THE PAPER USED 

If the central metal strip of the receiving tray be 
properly hooked under the tie-rod found just 
beneath the impression roller, its length can 
readily be extended or shortened by pulling it out¬ 
ward or pushing it forward, until it will accommo¬ 
date the length of sheets being mimeographed. 
To adjust the tray according to the width of the 
paper used, the side guides are devised so that they 
can be moved. In order to alter the position of 
these side guides it is necessary to tilt them out¬ 
ward, in which position, and in this position only, 
they are movable in either direction. 

Next lower the wire bail and see that it swings centrally and freely, and that its point 
rests lightly on the printed sheets. Thus adjusted it will steady and guide the copies 
downward, and assist in forming an even pile (Note). 

WRONG-METHOD RESULTS 

Note. The extra handling needed to straighten up or “jog” the printed sheets, if scattered loosely about an 
unadjusted tray, tends to blur the copies unless they can be allowed to remain as they fall until they j 
become fully dry. 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 












A. B. Dick Company 


Page 23 


Step 26 RAISE OR LOWER THE PRINT ON THE PAPER 

The facility for raising and lowering the print on 
the impression paper has but a limited range; the 
reason for this adjustability is not one of general 
positioning of the print, but merely a provision 
against any slight inaccuracies that may have 
occurred in the original calculation of the oper¬ 
ator when writing the stencil. (See Step 3.) 

The raising and lowering is easily done by an ad¬ 
justment of the print adjustment knob (12). If the 
print is too low on the sheet, in order to raise it 
turn the timing-knob clockwise. Should the print 
be too high, lower by turning it counter clockwise. 
One complete revolution of this knob, in either 
direction, makes a change in the position of the print equal to one typewriter line-space. 

Three rings will be found on the shaft of the knob, and above the shaft an indicator. 
When the indicator points directly at the center ring the feed timing is in normal 
adjustment, and therefore the print will appear on the impression paper in the par¬ 
ticular position where the stencil-writer planned that it should appear; provided, of 
course, that the stencil itself was originally positioned according to the directions. 

Turning the knob clockwise until the indicator points to the outermost ring, raises 
the print approximately one-half inch above its normal or originally planned loca¬ 
tion on the sheet. Turning the knob counter clockwise until the indicator points to 
the innermost ring, lowers the print approximately one-half inch below its normal 
or originally planned location. 

N. B.—Avoid turning the timing-knob so far in either direction that the indicator 
passes more than one-sixteenth of an inch beyond the outermost or innermost 
ring {Note). 

WRONG-METHOD RESULTS 

Note. If the timing-knob be turned to an extreme in either direction so that the indicator passes beyond 
the above prescribed limitation, the paper advancing mechanism will thereby be thrown out of time, 
and the reliability of its action lost. 



Step 27 SET PRINT RECORDER FOR NUMBER OF COPIES REQUIRED 

The print recorder, the large white dial of which 
appears on the frame of the Mimeograph, is a device 
for indicating to the operator when the desired 
number of copies have been printed. At any time, 
as the copies are being run, a glance at the position 
of the pointers on the dial will at once reveal just 
how many more copies are yet to be made. Waste 
of paper and office stationery occasioned by over¬ 
runs of unnecessary copies is avoided by this de¬ 
vice. The method of its operation follows. 


SETTING THE POINTERS 

After determining the number of copies to be made 
from the stencil, and after printing a few copies to equalize the distribution of the 
ink and clear the print, proceed to set the pointers on the dial so that they will indi¬ 
cate the number desired. The smaller pointer on the outer rim of the dial is the 
indicator of the even hundreds. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 













Page 24 


The Service Book 


By means of the small handle opposite the pointer, set it for the number of hundreds 
desired. The large inside pointer indicates units only. By means of the central 
knob, set this pointer for the number of additional copies needed, over and above 
the number of even hundreds already provided for. For example, to set the print 
recorder for 818 copies, turn the hundred pointer to line 8 on the dial, and the unit 
pointer to line 18. If less than 100 copies are needed, set the hundred pointer at 
zero and the unit pointer at the desired number. If even hundreds only are wanted 
(as 700, 800, etc.), set the unit pointer exactly at zero (Note). Where thousands of 
copies are wanted, indicate them by the number of hundreds they represent; for 
example, for 2,000, have the hundred pointer set at line 20. The dial numbering 
makes provision for a 10,000 run. If more than 10,000 copies are Required, reset 
the recorder as often as need be. 

Observe that the pointers move in one direction only, and that while setting them 
the moving of one pointer has no effect upon the other. Also that when the Mimeo¬ 
graph cylinder merely revolves, without copies being printed, the recorder does 
not register. The pointers will only change position as the actual prints are made. 
As each copy is printed the unit pointer will move one space on the dial, and each 
time this unit pointer passes zero, the hundred pointer will likewise move a single 
space; and it is thus that the pointers always show how many copies are yet to be 
printed. As the last copy is made, the bell will ring, and so long as the cylinder is 
turning, the ringing will continue, until either pointer is reset. 

WRONG-METHOD RESULTS 

Note. If the unit pointer be accidentally allowed to remain one space to the left of zero, which would be the 
99th line (though not so marked on the dial), 99 extra copies would be printed. 


Step 28 ALLOW USED STENCIL TO REMAIN ON THE CYLINDER 

By permitting the stencil to remain upon the cylinder after being used, it will conve¬ 
niently serve as a protective covering to the pad (Note) until its removal is made 
necessary by subsequent work. Then, if there is a possibility that there may be 
in the future a call for more copies from the same stencil, it may be preserved and 
retained until such time arrives. (See Step 29.) 

If the stencil is removed the ink pad should be protected while the Mimeograph is not 
in operation by using one of the ink-resisting, paper “flexible covers” provided for this 
purpose. Many users prefer to utilize the paper “flexible cover” even though the 
stencil may be left on the cylinder, particularly when used in hot temperatures. 

WRONG-METHOD RESULTS 

Note. Leaving the ink pad entirely uncovered, while the Mimeograph remains idle, permits dust to gather 
on the pad surface and also endangers the intricate portions of the feeding mechanism of the machine 
(through ink drippings), and these are difficult to clean. If allowed to remain uncleaned, the printed 
sheets are liable to be soiled. 


Step 29 CLEAN AND FILE THE STENCIL FOR FUTURE USE 

Employ the following simple method which will, without fluids or washing, thor¬ 
oughly remove the ink from a stencil. This step is a necessary proceeding before' 
it can be safely filed away (Note 1) if it be desired that a preserved stencil 
yield copies to compare favorably with those it originally produced. 

As the stencil is removed from the cylinder, lay it flat between any soft, smooth 
waste paper (newspaper will answer), smooth out with the hand, and allow a few 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 






A. B. Dick Company 


Page 25 


moments for the excess ink to be absorbed. Remove the stencil from these inked 
sheets and discard them. Now spread out the stencil on a sheet of soft paper, the 
more absorbent the better, this time with the face uppermost. Observe where 
varnished corrections have been made. Cover these spots freely with talcum powder 
(a small can of talcum is supplied with the Mimeograph equipment). (Note 2.) Next 
cover the stencil with a top sheet of the same soft paper and fold the stencil with the 
double covering into a size suited to the envelope or other receptacle in which it is to 
remain filed. The act of folding does not in any way injure the stencil, but when 
filed a moderate pressure should be applied, sufficient to maintain a continuous 
contact between the two sheets of absorbing paper and the stencil. This will enable 
the process of cleansing, by absorption of the ink, to still continue, after the stencil 
has been filed away. Where users elect to file stencils in a fiat condition, the top and 
bottom absorbing sheets should, in the same manner, be placed in close contact with 
the stencil. 

If a stencil that has been filed away has become dry, apply dermax to the negative 
side, and blot off the excess before placing it on the cylinder. As a result it will 
take the ink quickly and the print will be clear. 

WRONG-METHOD RESULTS 

Note 1 . The mistake is often made of permitting a small quantity of ink to remain in the stenciled letters, 
under the impression that a little ink can do no harm, whereas the smaller the particles of ink, the 
more quickly they solidify and cause blemishes in the work. 

Note 2. If the varnished correction spots are not thus covered with talcum before filing, the varnish will adhere 
to the covering sheet, and when separated the corrected portion will be damaged. 


Step 30 USE CARE IN PUTTING AWAY THE MIMEOGRAPH 

When through using the Mimeograph, cover the cylinder as in Step 28 and turn it 
so that its closed portion is downward (Note i), and leave the ink fountain located 
in the center of the cylinder (Note 2) with the bristles of the brush pointing straight 
downward. This practice will insure every feature of the inking mechanism 
being kept absolutely clean. (See, also, Step 28.) 

To guard against accidental disturbance of this proper positioning of the cylinder 
and ink fountain, while the machine stands idle, the hand-crank may be attached 
to the feed-timing-knob with a cord or rubber-band. 


THE MIMEOGRAPH COVER 

After placing the cylinder and ink brush in position as above directed, place the 
cover over the machine in order to prevent dust accumulations (Note 3). 

WRONG-METHOD RESULTS 

Note 1 . If the closed portion of the cylinder is allowed to remain uppermost, the surplus ink within it, instead 
of draining toward and collecting in the center of the cylinder where it would be properly retained, 
will gravitate toward the ends (and the ink in the pad will do likewise), and will drip into the paper¬ 
feeding mechanism. Another annoying result of the inverted cylinder is that the surplus ink will 
drain from the brush and run over the surface of the ink fountain. For satisfactory operation of the 
ink fountain, the cradle rods should be kept clean and slightly oiled (with a rag). 

Note 2 Permitting the ink fountain and brush to remain at or near either end of the pad, instead of in the 
’ center as directed, will overbalance the cylinder and bring it to rest in a tilted position so that the 
ink will drain toward the pad rods, with the results already described. 

Note 3 Failure to use the cover means an accumulation of dust and grit in and on the cylinder, particularly 
' harmful to the ink, and also injurious to bearings of working parts. It is but an easy step from such 
negligence to careless indifference in other matters concerned with the care of the machine. (See page 30.) 

For Reference Chart , showing all parts of the Mimeograph , see page 6. 






Page 26 


The Service Book 


YOU CAN BE ABSOLUTELY SURE that when 
the foregoing instructions are faithfully followed 
satisfactory results will be obtained. 

The foregoing Step-by-Step instructions are, from 
beginning to end, based directly upon years of 
practical operating experience, embracing the wid¬ 
est possible range of efficient Mimeograph work. 

The following Chapters pertain to the operation, 
adjustments, and care of the Mimeograph. 

A. B. DICK COMPANY. 





A. B. Dick Company 


Page 27 


Chapter 1 

The No. 77 Mimeograph and 
Hand-Feeding Methods 

T HE foregoing instructions have referred entirely to the Model No. 78. The Model 
No. 77 is equipped for hand feeding only. The automatic-feeding device is not 
furnished with this model. In all other respects the two machines are identical. 
Therefore all the general instructions except those concerned with automatic 
feeding apply to both machines. 

Hand Feeding with Model No. 78 

The mimeograph user whose requirements are limited to comparatively short runs and 
simple classes of work may be afforded all the facilities necessary for such uses in the 
hand-feeding machine. And even the larger user, possessing the No. 78 with its auto¬ 
matic feed available for handling the main volume of his work, may have occasional 
runs when hand feeding will be preferable, or when it may afford the only way in 
which the work can be done. 

It is advisable to use the hand-feeding method under the following operating conditions: 

(1) When using 

(a) cardboard 

(b) heavy or highly glazed paper 

(c) punched or perforated paper 

(d) very small or odd sizes of paper 

(2) When 

{a) close registration of prints is required 
(i b ) sheets of paper are wrinkled or curled 

As the No. 78 Model is equipped for both methods of feeding impression paper, do not 
misplace the hand feedboard. 

To hand feed the No. 78 Automatic-Feeding Mimeo¬ 
graph, it is necessary to attach, just above its auto¬ 
matic feedboard, the special hand feedboard , furnished 
for the purpose with every No. 78 Mimeograph. 

Attaching the Hand Feedboard 

First unscrew and remove the idler roller shaft screw 
(13) and slide the shaft out of its bearings. Replace 

screw to prevent loss. 

(Later, reverse this operation when replacing shaft.) 

Press down the small lever found above the paper¬ 
weight yoke (49), causing the yoke to drop. Then 
depress the feedboard release latch (17) and lock down 
the automatic feed-plate. 

Insert the forward end of the hand feedboard under 
the hooks (14) located directly in front of automatic 
feed-roller shaft (23), resting the notched side plates 
(66) on the rear cross rod (20). 

For Reference Chart , showing all parts of the Mimeograph , see page 6. 



Installing Hand Feedboard 










Page 28 


The Service Book 


Attached to the under side of the hand feedboard is an angle clip (65). Lift the paper¬ 
weight slide bar and fix it in stationary position by swinging the angle clip under it. 
Machine is then ready for hand feeding. 


The Feeler-Pins—A Feature 

As the paper is forwarded to the paper stops, located immediately in front of the im¬ 
pression roller (7), the feeler-pins, located at the point where the paper enters the 
machine, come into contact with the sheet. The presence of the sheet prevents the 
further upward movement of these pins, thereby releasing the impression roller, so 
that the print may be made. When no paper is inserted the pins rise to their full 
height and the impression roller is thereby prevented from coming into contact with the 
stencil-covered surface of the cylinder, from which, if contact were made, the roller 
would receive an ink print on its surface, as would also the lower portion of the stencil 
surface (retransferred from the roller). This condition would produce blemished work. 

When Feeler-Pins are Not Used 

Lock down the feeler-pins when feeding tissue-paper if the feeler-pins press upward 
against the tissue, causing it to wrinkle and not feed smoothly, or when feeding paper 
having punched holes in which the feeler-pins catch. This locking down is done by 
turning locking-screw (13b) with a screw-driver, until it is set tight. 

CAUTION: Be sure that feeler-pins are released again, by unscrewing (13b) before 
attempting other work. 

The Method of Hand Feeding the Sheets 

Place on the feedboard 50 to 100 sheets of impression paper in a squared-up condition, 
so that their forward edges rest about two inches from the feeler-pins, and otherwise 
so positioned as to be centered from side to side. Bring the two metal side guides 
close enough to the edges of the paper pile to steady it, without firmly confining it. The 
centering of the paper is essential for proper co-operation with the likewise centered 
impression roller and paper stripping system. Forward a single sheet, to determine 
if the pile be centered. The relation of its side edges to the two small end-rollers under 
which the sheets pass will determine this. 

“Comb back” the sheets (see page 19) to facilitate the feeding. This is accomplished 
by passing the thumb-nail over the pile, with strokes from right to left. 

Now with the right hand turn the hand-crank (in a right-hand direction, from its upper¬ 
most position), observing that it takes two complete revolutions of the crank to print 
each copy. 

In hand feeding, the proper time to start the forwarding of each separate sheet is when 
(the closed part of cylinder being uppermost) the hand-crank is extended to the right , 
in a horizontal position. With cylinder and hand-crank so positioned, pick up the 
first sheet with left hand and forward it to the paper stops; turn the crank and, as the 
cylinder revolves, the sheet is carried forward automatically, printed and discharged 
into the tray. 

To start the first stroke correctly, place the crank at the extreme right-hand position as 
above instructed (cylinder having its closed part uppermost), insert the sheet to the 
paper stops, turn crank twice around (thus printing the copy) and stop; insert another 
sheet, and, as each sheet is fed, keep repeating this method of making the two complete 
turns and stopping before the next sheet is forwarded. With a little practice the sense 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 





A. B. Dick Company -- 

---- Page 29 


of time, or rhythm, will be acquired, and the motions will then gradually become 


DETAILED EXPLANATION 

m however, to be explained to those who seek to know the reason for such a precise 

method of feeding, that, due to the time of the rising and falling of the feeler-pins it is 
Sl i eetS t0 u the st0ps at a11 times durin S the turning of the hand-crank. 
h! ,fS g ^ be d i 0n u’ howev u er, without interference by the feeler-pins, at any 
^ ia l e , af t.^ r the hand-crank has reached its highest position, on the second time around, 
11 C T eS t0 the 1< 5 ¥ ? t po , lnt - N ote that the right-hand horizontal position of 
the hand-crank, recommended as the position for sheet insertion, is the medium, or half¬ 
way point in that interval during which the sheets may be fed. After the hand-crank 
nas passed by the straight downward position, the feeler-pins quickly rise, and having 
risen prevent the insertion of the paper to the paper stops, so if the forwarding of the 
sheet of paper is attempted too late, the feeler-pins will be in the way, preventing its 
advancement until the cylinder revolves again. 

If, as it sometimes happens in improperly timed hand feeding, the top edge of a sheet en¬ 
gages with the points of the feeler-pins, that sheet will not be forwarded, but the impression 
roller will be made to rise, and therefore it and the stencil will be inked. If this happens 
a lew used blank sheets of paper may be run through the Mimeograph for the purpose 
of cleaning; the roller may be wiped off with a piece of cloth. 


Paper Must be Fed to the Stops, 
or Prints Will Not Register 

Prints, on impression paper being fed by hand, will be correctly registered if the paper 
is fed against the paper stops. If fed to any point between the paper stops and feeler-pin 
holes, the print will appear on the paper but not in its required position. 


The Hand Feeding of Cards 

In the feeding of stiff cards, the necessary combing should be done before they are placed 
upon the feedboard. Otherwise, the method of feeding is the same as with paper. To 
arrange strippers for card printing, see page 31. 


Hand Feeding on a Motor-Driven Machine 

When the Mimeograph is electrically driven, both hands of the operator are available 
for the combing, steadying and forwarding of the sheets, in the hand-feeding operation. 
Exceptional speed can be developed under such conditions. 

While the ordinary one-hand method of feeding, from 
sheets combed backward, as previously described, can 
also be employed when machine is motor driven, yet 
greater speed can be attained by a forward combing 
method, employing both hands, as customary among 
printers when feeding a cylinder press. 

When this printers’ method of feeding is adapted to 
the Mimeograph, the following detailed instructions 
will apply: 

The pile of a hundred or more sheets, combed forward , is supported in the left hand, in 
the position shown in illustration, the hand grasping the pile at the lower end, the left 
thumb on the top of the pile, and the remaining four fingers beneath it. The back of 
the hand rests upon the feedboard. In pushing forward the single sheets, the right 
thumb or either one of the first two fingers should be employed. A rubber finger-tip, 
as used by press-feeders, will make such forwarding easier. The left thumb positioned 
on top of the pile is in effect doing four things at once—steadying and combing the 
sheets, releasing each single sheet as forwarded, and restraining the sheet immediately 
beneath it. 



For Reference Chart, showing all parts of the Mimeograph, see page 6. 












Page 30 


The Service Book 


Chapter 2 

Cleaning the Mimeograph 

I N OPERATING the highly developed modern Mimeograph its proper care and cleans¬ 
ing take second place only to its lubrication; to continually lubricate bearings without 
first cleaning off the ink or other accumulations not only reflects unfavorably upon 
the operator but shortens the life of the machine. 

Do the cleaning frequently, using soft cloths and 
cleansing benzine (or gasoline, or kerosene). One cau¬ 
tion only: Keep all such fluids, and other cleansing 
preparations of that nature, away from the rubber 
rollers of the machine; otherwise they will become 
swollen and impaired. 

Denatured alcohol, if employed as a cleanser, must be 
kept away from the japanned finish of the ironwork 
and from all the polished woodwork of the machine 
or support on which it rests. To brighten the japan¬ 
ning or woodwork use furniture polish or oil. 

The operator who stands each day before a well-kept Mimeograph will see his own self- 
respect reflected. He will improve his status among his office associates, and likewise 
with those in a position to influence his advancement. 

For the careless, indifferent operator, who persists in disregarding every consideration of 
this kind, there is only one solution and that is a periodical equipment “inspection," on 
the military order, backed by sufficient authority to effect insistence on at least a reasonable 
amount of care. 


Chapter 3 

Interleaving Mimeographed Copies 

Method used to prevent slight spotting with ink, on the reverse 
side of the impression sheets, commonly called “offsetting.” 

I NTERLEAVING or slip-sheeting is placing an extra sheet of paper on top of each 
printed copy as it falls into the tray to keep the copies separated until the mimeograph 
ink is nearly dry. Any paper may be used for this purpose, provided it is 
not so highly finished that it will blur the copies. These slip-sheets may be 
used repeatedly. 

Dermatype Stencil Paper is now almost universally used, and the ink deposit is so 
diminished that slip-sheeting is required only in exceptional cases. 

THE EXCEPTIONAL CASE: If mimeograph work, requiring slip-sheeting, is sufficiently 
extensive to justify the preparation of special slip-sheets, to provide for extra speed in their 
insertion and removal, a size of 10x10 inches will afford the greatest utility. Light-weight 
cardboard, or the inexpensive strawboard, is preferable to paper, for quick handling. To use 
these 10 x 10 squares remove the nearer paper guide from the receiving tray. When copies 
are sufficiently dry, jog the square cardboards and the copies can be shaken out rapidly. 

When the slip-sheets are of same size as the printed sheets, the removal of copies is slower. 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 











Page 31 


A. B. Dick Company 


Chapter 4 


Mimeographing on Narrow Sheets of Paper 


H 


Heavy Stock Needs No Stripping 


raricp iftHT ° r carc * stoc k will not cling to the stencil surface sufficiently to 

Dosition t nn b thp ar WHK ar0 T d °P cy,mder - Such Paper can be placed in any 
Pnr u r.rWf ti! e f f edb ° ard a ? d fed over any portion of the impression roller. 
r or work of this class the stripper and clip system can be ignored. 

ronS E ^n?H N m,Jt S ^h C | rdb?a t rd ’/ ed t0 ? ne sid u and . somewhat beyond the end of the 
roller, should meet with any interference from the stopper, slightly change the feeding 
p°sinon, laterally, ° r if that does not avoid the contact with the stripper, move the stripper 
tfrPQnppti extr ^ me Slde position where it is entirely out of use, and later replace it, opposite 
its respective clip, when the card work is finished. 


When the Usual Stripping is Necessary 


N . a t r °ru ™P ress f fen paper of ordinary weight but of insufficient width to engage the clips 
at both sides of the cylinder (see Step 17) should be so positioned on one side of the 
feedboard that the sheets when forwarded will extend far enough beyond that end of 
the impression roller, to be engaged by one cylinder clip and its co-operating stripper. 


K is usual, in such cases, to place the stenciled matter on the left side cf the stencil 
sheet and to feed the paper from the farther or left side of the feedboard. 


When a Narrow Impression Roller is Needed 

Narrow paper, if very light and flexible, may necessitate the use of a cylinder clip and 
stripper on each side of the sheet. To accomplish this a special narrow roller must be 
used. Rollers can be purchased in lengths from inches increasing by quarter-inch 
graduations to inches. 

Paper less than 4 inches wide cannot be printed in this manner. 

To remove the impression roller, note the directions next following. With the standard 
length roller removed, a shorter one can then be put in its place. Cylinder clips and 
strippers must then be adjusted to the shorter roller. (See Step 17.) Adjust the paper 
guides on the feedboard to properly center the sheets. (See Step 19.) 


Method of Removing Friction-Type Impression Roller 

Turn the cylinder until open part faces downward. Rest the thumb on top of roller in 
central position, allowing thumb to overlap the plate.- Put four fingers under the roller 
and thus lift it out of its bearings, being careful to release both ends of the roller shaft 
at the same time, in order not to wrench the arms on which the roller is supported. 

Method of Removing Impression Roller Carrying Ball Bearings 

Turn the open part of the cylinder down. Release both ball-bearing locks by pressing 
them to the side and pulling outward; then grasp the roller in the center and slide the 
bearings out of the sockets; lower the roller until the bearings are clear of the lever locks. 


To Place Impression Roller in Position 

With the open part of the cylinder down, release both ball-bearing locks on levers by 
pressing with thumbs and pulling outward. 

With the ball bearings in place on the ends of the roller shaft grasp the roller in the 
center and pass it underneath the roller levers until the bearings are beyond the sliding 
locks; then raise and place it in the sockets; now push the locks forward into place to hold 
it in position. 


For Reference Chart , showing all parts of the Mimeograph, see page 6. 








Page 32 


The Service Book 


Automatic Feeding of Narrow Sheets 




To automatically feed narrow paper from one side of 
the automatic feedboard, the idler feed-roller must be 
moved to the station on its shaft over the feed-roller 
to be used. 


Release set screw (4), slide the idler roller along this 
shaft to the required station and set the screw firmly 
onto the indentation 
made for that pur¬ 


pose. 


r , . Only one feedboard 

Adjustingldler Feed-Roller for narrow sheets ^ . § 

ally used in such work, but, where lateral registration 
is demanded and also for automatic feeding of very 
short or very narrow pieces of paper, an auxiliary 
paper guide may be purchased. 


Auxiliary Paper Guide for feeding short or 


Chapter 5 

When the Lines Do Not Print Straight 

In Automatic Feeding 

I NACCURATE stencil-making may cause the horizontal lines to slant on the copies 
or the vertical lines to be printed out of parallel with the side edges of the paper. In 
either case correct the error by adjusting the stencil strap (46). 

To make such adjustment, first throw back the clips, then lift the stencil from 
the pad surface, without detaching it from the buttons, and while thus suspended turn the 
stencil adjusting thumb-screw (45) to the right if the horizontal lines slant upward, and to 
the left if they slant downward. Then respread the stencil on the cylinder, and return 
clips to position. Make a print, and if alignment is not exactly corrected, repeat the 
operation. After completing the run from such a stencil, BE SURE TO RETURN THE 
ADJUSTABLE STRAP TO ITS NORMAL POSITION, parallel with the immovable 
piece on which it is supported, otherwise your next correctly made stencil will print out 
of line. 

In Hand Feeding 

If the impression paper is being fed by hand, and an incorrect alignment in the stencil 
work is evident, the improper alignment on the copies can be corrected by placing 
the side gauges on the paper feedboard at an angle, so the sheets will be fed forward 
in a position to straighten the copies. 

If in feeding cardboard this need arises, and especially card stock in smaller sizes, as 
postal cards, for example, the use of the stencil strap adjustment is especially recom¬ 
mended so that such cards may be fed firmly against the feed stops to attain speed in 
the feeding, and accuracy in the position of the print. 

We recommend care in writing the stencil straight , to 
avoid any need of the foregoing correction methods. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 











A. B. Dick Company 


Page 33 


Chapter 6 

Typewriter Platens (or Rollers) 

T HE platen or roller of a typewriter is the rubber cylinder against which the paper 
is held to receive the impact of the type. There are in use three familiar grades, 
viz., soft, medium-hard (or correspondence), and hard (or manifolding) platens. 

Dermatype stencils can be written under such normal conditions that the regular 
correspondence platens, in general use, serve all ordinary stencil-making requirements. 
Most makes of typewriters are equipped with platens sufficiently resistant for dermatype 
stencil-writing purposes. 


Soft Platens Will Not Yield Good Stencils 

A hard (or manifolding) platen is necessary for stencil-writing when the type used is 
larger than the pica size. 

In the use of the Underwood typewriter, we especially recommend the hard (or mani¬ 
folding) platen for all sizes of type, if the best stencil results are desired. 


Chapter 7 

Extremely Dark or Extremely Light Prints 

T HERE are numerous ways of varying the appearance of the mimeograph print. 
Dark or light copies may be produced to suit any special requirement or individual 
taste, if the operator understands the conditions governing the result. 

Conditions That Determine the Degree of Strength of the Print 

IMPORTANT : The following takes no account of 
mimeograph work of ordinary quality and density. 

Each of the following four suggestions will aid in making the print EXTRA HEAVY. 

(1) Thoroughly dermax the backing, and the face of the stencils as well, carefully 
blotting off excess Dermax, before writing. 

(2) Select a typewriting machine having a hard platen (or roller). 

(3) Give a very hard (but snappy, “staccato”) touch to the keys. 

(4) In printing turn the crank slowly, thus allowing longer contact and increased 
deposit of ink. 

Each of the following four suggestions will assist in making the print EXTRA LIGHT. 

(1) Apply Dermax very moderately, and over the backing only. 

(2) Use a typewriter having a medium platen (or roller). 

(3) Give a studied lightness to each separate stroke of the keys. 

(4) In printing turn the crank rapidly, thus reducing the time of contact and 
the deposit of ink. 

For Reference Chart , showing all parts of the Mimeograph , see page 6. 








Page 34 


The Service Book 


Chapter 8 

Ribbons for Matching Mimeograph Work 

S PECIAL ribbons made by us, may be purchased for matching mimeographed type- 
written matter. They are prepared with inks which match the colors and effects 
of the mimeograph prints; but the uniformity with which any lot of letters, or 
forms, can be filled in with names, addresses, or other individual data, depends 
entirely upon the skill and experience of the typewriter operator. For example, while the 
ribbon is fresh and thus more liberally supplied with ink, the key-touch must be light, 
and must depart as far as possible from the snappy or “staccato” touch. As the ribbon 
continues in use, and its ink supply gradually diminishes, the key-touch must become 
more decided, though it should be borne in mind that the typed matter will grow deeper 
in shade shortly after being written. 

It is advisable to mimeograph copies with the darker effect (as in Chapter 7) if they are 
intended for matching work. (See page 33.) Furthermore, work slowly printed to pro¬ 
duce this dark effect should be interleaved. (See page 30.) 

Exact matching of mimeograph work cannot be uniformly executed except with great 
care on the part of the typewriter operator. Nevertheless, mimeographed communications 
have established their value in advertising and general publicity work. A typewriter 
ribbon of an entirely different color from that of the body of the letter produces the most 
effective work. For example: red ribbon date lines and addresses are especially attractive. 
when heading a letter neatly mimeographed in black ink. 


Chapter 9 

The Care of Dermatype Stencil Paper 

Method of Restoring It When Dry 

D ERMATYPE stencil sheets are packed face to face, and should be allowed to 
remain so placed, without disturbance, until used. So long as this close contact 
of the sheets is maintained they will remain soft and pliant and thus in good work¬ 
ing condition for a considerable length of time; and especially is this true if the 
box of sheets is kept in a cabinet or drawer and thus not needlessly exposed to drying 
conditions. 

If, due to extreme age or neglect of the above precautions, stencil sheets shall have become 
somewhat dry, and therefore more difficult to use in the normal manner with best re¬ 
sults, they can be restored so as to produce successful work. No matter how dry they 
may be the dermax softening fluid, properly applied, will serve to revive and restore 
them to a suitable condition for use. 

To accomplish the restoration of dry Dermatype, first place between the stencil sheet 
and the manila backing a hard sheet of paper (so as not to spoil the unused backing 
sheet) and then apply dermax to the top surface of the stencil sheet and let it stand for 
fifteen or twenty minutes. It will be found that the stencil sheet coating has grad¬ 
ually absorbed most of the dermax; blot off what excess remains, and the sheet will 
then be found to be as soft and pliant as when new. Remove the previously inserted 
sheet of paper, and, when stencil is to be written, employ the handy roller and proceed 
with the dermaxing of the backing in the regular way. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 







A. B. Dick Company 


Page 35 


Chapter 10 

Removing Lint from the Stencil Surface 

I N mimeographing on certain kinds of impression papers, lint or paper-pulp will 
adhere to and gather on the surface of the stencil sheet, and if this is not occasionally 
removed it will detract from the sharpness and finished quality of the print. In 
very cheap or extremely absorbent papers, this condition is most pronounced, and 
the removal should therefore be more frequent. When higher finished paper stock is 
used this attention is unnecessary. 

To cleanse the stencil surface, when so covered, saturate a small piece of soft cloth with 
denatured alcohol, or benzine, and lightly rub the stencil surface while on the cylinder, 
making the strokes toward the side, in one direction only. If mimeograph correction- 
varnish has been used on the stencil, avoid using alcohol, as it will dissolve the varnish 
and spoil the corrections. Benzine, however, has no effect upon the varnish. If the auto¬ 
matic feed-rolls deposit a small quantity of lint on the stencil surface above the type¬ 
written matter, it can be removed by rubbing lightly with a piece of dry cloth. 


Chapter 11 

Uses for Powdered Soapstone in Mimeographing 

P OWDERED soapstone, familiarly known as “Talcum Powder,” and as such every¬ 
where obtainable, serves several purposes in mimeographing. A small can of it is 
made part of the equipment. 

Should a stencil sheet, after having been spread upon the cylinder, become “sticky,” 
causing the impression paper to cling to it, a small quantity of talcum powder applied 
with a soft cloth to the entire stencil surface affords an immediate cure. Another 
method of application, which assures an even distribution and the avoidance of excess 
that might clog the stencil, consists in rubbing the powder over the surface of a sheet of 
impression paper and then making a print (very slowly) on the powdered surface of this 
sheet. A thin but sufficient coating of the powder will be thus transferred to the stencil 
surface. (In using a No. 78 Mimeograph pass the talcumed sheet over the top of the 
feed-rolls, so that none of the powder will be deposited on the rolls themselves.) 

Certain qualities of light-weight papers, being extremely thin and flexible, are difficult to 
strip, however accurately the strippers may be adjusted. In such cases it will prove 
helpful to apply talcum to the stencil surface in order to relieve the strippers, whether 
or not “stickiness” is shown. 

Soapstone (talcum) should be applied to all varnish spots on stencils filed away to avoid 
adhesion to the absorbent sheets. (See Step 29.) 


Chapter 12 
Changing Inks 

W HEN the need arises for a limited amount of mimeograph work in a color of ink 
other than that in the ink fountain, the simplest method is to remove the 
fountain from the cylinder, and, after cleaning the diaphragm and changing 
pads, apply the ink with a hand brush as directed on the following page. 

To Remove the Ink Fountain 

To remove the ink fountain, depress tank lock (41) and withdraw the inking rod 
handle (33) from the machine. Press the far cylinder trunnion lock (3) away from the 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 







Page 36 


The Service Book 


cylinder trunnion screw (2), turn the cylinder trunnion screw two or three revolutions 
and draw out the cylinder trunnion (1) only far enough to release the cradle. (37) on 
which the fountain travels. Take hold of the ink fountain and cradle, back it off the 
shoulder, on the center of the cylinder head nearest the operator, and lift the entire 
inking attachment out of the cylinder. To replace the fountain and brush reverse 
these steps. Caution: The tank lock must be on side nearest operator. 


To Clean the Cylinder Diaphragm 

Detach pad rods, and remove ink pad. With pieces of any soft paper blot off the greater 
part of the ink from the perforated metal surface, both inside and out, then clean this 
surface with soft cloth saturated with benzine, or other cleanser, rubbing with sufficient 
firmness to draw out and absorb all the ink retained inside the perforations themselves. 


Applying Ink with Hand Brush 

With the diaphragm thus clean, and a new pad in place, it is then a simple undertaking, 
with a hand ink-brush (List No. 490) to spread ink moderately, and evenly, inside 
the cylinder, until it has sufficiently and uniformly saturated the pad. Inks are obtain¬ 
able in round cans (see Supply List) suited to hand-brush application, and in order that 
such method should prove as neat and clean as possible, it is but necessary to acquire 
a little of the painter’s knack, slowly revolving the brush handle between the fingers, 
while conveying ink from the can to the cylinder. Ink will not drip from a brush thus 
slowly revolved. 

To Clean Inside of Fountain Before Introducing a Different Color of Ink 

To remove the fountain from the supporting cradle, slide it to either end of the cradle 
rods, press the opposite ends of these rods together, and lift off the end piece. 

Should the tank contain ink, which must be removed, suspend the tank and brush 
in upright position over any receptacle or waste pipe, open vent-valve (42) and drain 
out the ink. Then remove ink cap (29) and run water through the fountain, direct 
from the faucet (hot preferred), close the vent-valve, and then follow this flushing by 
pouring a small quantity of benzine, or similar cleanser, into the tank. Replace ink cap 
and shake thoroughly. Open vent-valve and drain out contents. In preparation for 
any light-colored ink, the benzining may well be repeated. If a change of ink in the ink 
tank be made from one of intense color, as black, to an ink of a more delicate shade, as 
blue or red, the cleaning of the tank, and fountain ink-brush also, must be especially 
thorough. Under the reverse circumstances, however, ordinary care will suffice. 

The brush bristles may be cleaned if necessary (changing from a deep color to a lighter 
shade) with hot water and benzined cloth, as outlined above for cleaning the tank. 

CAUTION: Two inks of different kinds must not be mixed in the ink tank. Should such 
a mixing accidentally take place, the mixture is likely to become thick, or even to jell, 
whereby the fountain valves will become clogged and fail to release the ink. 

CAUTION: Never force open the vent-valve with a wrench. Instead, if it sticks, fill the 
fountain with hot water and gradually turn valve while the hot water is loosening the 
gummy ink in the valve slides. 


To Remove the Cylinder 

For cleaning, adjusting and repairing, it is occasionally necessary to remove the cylinder. 
This is easily done as follows: With the opening of the cylinder turned upward, remove 
the ink fountain as previously explained, draw out the cylinder trunnion (1) from the 
cylinder, press the cylinder off the shaft at the side nearest the operator and lift it 
out. Replace by reversing the operation, taking care to see that when putting the 
cylinder on the shaft nearest the operator the pin on the cylinder head fits into the 
socket of the gear wheel, and that the trunnion (1) is in position and locked securely. 

For Reference Chart, showing all parts of the Mimeograph , see page 6. 





A. B. Dick Company 


Page 37 


Chapter 13 

Renewal of Automatic Feed-Rolls 

When and How Installed 

W HEN the automatic^ paper feed-rollers (15) become worn to such an extent 
that their efficiency is diminished, they should be replaced with a new set. 
(Part List No. 3082-A.) 

To install them, loosen idler roller set screw (4) and then remove the auxiliary 
plate, which projects over the feed-roller shaft, by first loosening the screws at the 
extreme ends, and sliding the plate out and over the feed-rollers. Then remove the 
screw on the outside of the frame which holds the automatic feed-roller shaft (23), by 
turning to the right (this is a left-hand screw); back the shaft through the screw hole 
in t5il ie frame far enough to remove it from the machine; loosen the set screws of the 
rubber feed-rollers and slide them off. In putting on new rollers set the shaft with the 
gear end to the right; slide the feed-rollers onto the left end of the shaft with the set 
screws to the left of the rubber rollers; see that the set screws enter the depressions or 
“stations” in the shaft, which will lock the feed-rollers in their proper places, with the 
teeth all in line. 

In replacing the shaft, reverse this operation, but be sure that the end gear is properly 
engaged with the gear in the frame on the near-side of the machine, and that the auxiliary 
plate is again in position, with the screws tightened, and the idler roller (26) properly 
replaced. 


When Feed-Rolls Need Cleaning 

When the printers’ ink on any forms, or letterheads, which are being automatically fed, 
is in a sufficiently fresh condition to make the surface of the feed-rolls become somewhat 
greasy, the rolls must be cleansed with alcohol and glycerin to enable them to pick up 
the sheets satisfactorily. A mixture of three-quarters alcohol and one-quarter glycerin 
is a preferable solution for keeping the rollers pliant. Alcohol alone has a hardening 
effect on rubber. 


Chapter 14 

Necessary Care of the Impression Roller 

The Need of Cleaning 

U NDER ordinary operation the rubber impression roller of a Mimeograph may 
become covered with a coating that will be found made up of a certain amount 
of ink accidentally deposited, but more largely of lint gathered from the surface 
of the impression paper. It will be necessary, from time to time, to clean it. 

Remove the roller from the machine (see page 31) and scrape with some metal edge not 
sharp enough to cut the rubber. Then apply alcohol or soap and water, but never 
benzine or kerosene. Oils are very harmful to rubber, and their frequent application will 
so swell the roller as to render it unfit for use. 

Never return the roller to place in a “sticky” condition. A little talcum powder spread 
over its surface will render the surface non-adhesive. 

Altering the Roller Tension 

The normal tension of the impression roller, regulated by the adjusting nuts (5), is when 
the nuts are flush with the top of the studs (as when the Mimeograph leaves the factory). 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 





Page 38 


The Service Book 


The roller adjustment should not be altered except to increase or diminish the pressure 

to overcome the unusual conditions named below. 

Increase —When the machine must be operated in a room with the atmosphere suf¬ 
ficiently cold to chill the cylinder and thereby stiffen the ink it contains, 
assuming that no means of increasing the warmth is available. 

—When the impression paper is especially rough, embossed or corrugated, 
or for any other reason inclined to be especially resistent to the ink. 

Diminish —When the atmosphere is necessarily hot, and the ink therefore flows so 
freely through the stencil that the copies print, even under high cylinder 
speed, more heavily than desired. 

—When it is sought to attain long runs, of many thousands of copies, from 
single dermatype stencils. 

—When the impression paper is so light that it wrinkles as it prints. 

—When the arrangement of the subject-matter offers little or no margin 
for the stripping means; so that a light pressure, and a talcumed stencil 
surface, must serve to accomplish the discharge of the printed copy. 

—When a lighter effect of print be desired than an increase of the cylinder 
speed is able to insure. 

REMEMBER to always put the adjustment hack to “normal” when the special work 
is finished. 

Warning! 

The great danger attending the making of special adjustments for occasional 
necessities is the fact that operators are likely to neglect to return such ad¬ 
justments to their proper or normal state when the unusual need has passed, 
and to this especial attention is now called. 


Chapter 15 

The Ink-Brush Adjustment 

U NDER constant usage the bristles of the ink-brush are likely to become softened 
and lose some of their effectiveness, no longer spreading the ink as thoroughly 
as they should. This natural wear of the bristles is easily offset by slightly 
lowering the brush , so that the bristles will again press firmly against the 
perforated metal surface. The substitution of an entirely new brush is rarely needed. 
The lower part of the inking fountain, which is called the brush-holder, is adapted 
to be raised and lowered on the round central shaft of the fountain, and it will be found 
fixed in its position by the action of screw (36), the head of which will appear on the 
flat side of the brush-holder. 

To lower the brush, remove from the cylinder the entire inking equipment, release the 
screw (36); gently tap the brush-holder, causing it to move down on the shaft from one- 
sixteenth to one-eighth of an inch. Again tighten the screw firmly, replace brush in 
the cylinder and note whether the bristles protrude so far into the ink-pad as to punc¬ 
ture and damage the stencil sheet. If so, the brush is too low and must be raised. 
The sides of the brush-holder must rest parallel to the sides of the cylinder. 

For Reference Chart , showing all parts of the Mimeograph , see page 6. 






A. B. Dick Company 


Page 39 


An incidental effect of softening the bristles is that the entire inking device is permitted 
to swing, without restraint, from one end of the cylinder to the other as the cylinder 
revolves. The lowering of the brush corrects this trouble, the bristles serving to hold 
trie device in a proper manner, so that it will remain in any position in which it is 
placed, whether the cylinder be stationary or revolving. 


Chapter 16 

How, When and Where to Oil the Mimeograph 


Left-Hand-Side View 



NOTE: A special necessity for very frequent oiling exists in the case of the bearing 
of the “truck” (wheel) on the older models of Mimeographs to which the arrow with 
the largest “X” points. Put the spout of the oil-can over the top of the bell of the 
print recorder, permitting the oil to drop to the wheel edge and its bearing. 

Where the print recorder has an oil hole immediately over the bell, the “truck” bear¬ 
ing (large “X” above) must be oiled through this hole. This oiling does not lubricate 
the recorder. 


I F the machine is to do its work properly, or be operated with ease, or if it is to be ex¬ 
pected to last for years in continually good working condition, oiling instructions 
must be followed. 

The lubricating oil used should be of good quality and of medium weight. Such “me¬ 
dium’' oil can be bought at any garage or gasoline station. 


For Reference Chart , showing all parts of the Mimeograph, see page 6. 












Page 40 


The Service Book 


Under-Side View 



To prepare for a general oiling of the Mimeograph, remove the ink-fountain and the 
cylinder (see page 36), and also the feedboard and receiving tray. 

The three accompanying diagrams plainly indicate when, at the various bearings, oiling 
is to be done. Rather than oil too freely, oil should be applied a drop or two at a time, 
and any excess then removed with a cloth to prevent subsequent dripping. Observe 
caution against getting oil on any of the rubber rollers. 


Right-Hand-Side View 



At points marked x ( x’ meaning oil frequently”) apply the oil, say every 20,000 copies or thereabouts 
At points marked o only now and then. * 

At points marked a only once in two or three months. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 


































A. B. Dick Company 


Page 41 


Lubricate the following Ink-Fountain Parts (when replaced) 

The tank lock (41) on each of the four sides of its plunger. 

1 he cradle (37) round rods and end bearings often. 

The mking-handle (33) entire length of rod. 

The seat of vent-valve (42) entire rim surface. 


J f h L s J;ff Js d0T li a S ^ al L ( 3 uan tity of vaseline on a cloth, thus avoiding the possibility 
ot dropping oil on the ink inside the cylinder, which would have a tendency to spoil the ink. 


Directions for oiling motor-drive equipment will be found on page 48 


Chapter 17 

Repair Parts to be Ordered by Numbers 

I N MAKING REPAIRS, involving the renewal of worn or broken parts, order new 
parts by List Numbers, found in our illustrated book, “List of Parts for Mimeographs 
Nos. 77 and 78,” as supplied with each machine—or sent free on request. 

All parts with their identifying numbers beneath them are shown on the left-hand 
pages in the book, “List of Parts,” and listed on the right-hand pages are the numbers, 
descriptions and prices of the parts. 

Improvements have been made on both models Nos. 77 and 78 since their introduction. 
It is therefore essential in ordering that the serial number of the machine be given as 
well as the list numbers of the parts wanted. 


Chapter 18 

Avoid Disturbing Permanent Adjustments 
of the Mimeograph 

T HE mechanisms which operate the feeler-pins, paper stops and other features 
are adjusted and timed when the machines are manufactured, and their operation 
thoroughly tested before being released from the factory. 

Therefore alterations are not necessary, and, if made, will seriously interfere 
with the proper operation of the Mimeograph. 

By removing the cylinder, the impression roller, the feedboard, and the tray, every 
part of the machine is accessible for cleaning, oiling and adjusting. 


Adjustment of the “Timing” Gears 

The six co-operating gears which are assembled in one straight line or “train,” and located 
in the upper section of the right-hand-side frame, are known collectively as the “timing 
gears.” Removing the cylinder plainly exposes the upper five of these six gears. The top 
one is the cylinder gear, and the one next below it, the crank gear. The three small 
gears next following are called the connecting gears, and engaged with the last one of 
these and directly below it is the last gear of the “train,” called the main cam shaft gear. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 








Page 42 


The Service Book 


If, inadvertently, these gears are removed, or if removal of anyone of them is necessitated 
by accidental breakage or wear,their timing after replacement must be done with extreme 
care and in exact accordance with the instructions which follow. 



Cylinder Gear Screw 
Cylinder Gear 
Crank Gear 

3 Connecting Gears 


GEAR “TRAIN” IN “TIME” 


Crank Gear Pin 
(large end) 


3 Aligned Gear Bearing 
Stud Slots 

Main Cam Shaft Gear 


The cylinder gear, the crank gear and the main cam shaft gear are each marked with 
a figure “1” on the rim of the inner face. Each of the three bearing studs holding the 
connecting gears has a slot across the head. These figures'!” on the large gears and the 
slots in the bearing studs of the small gears are the guides used to indicate the correct 
setting of the gear train and to properly time the operation and registration of the 
Mimeograph. When the gears are all in correct alignment the figures “1” on the cylinder 
gear and the crank gear point directly to each other and are almost in contact, and a 
straight line produced through these two marks will pass through the slots of the three 
bearing studs to the figure “1” on the lower or main cam shaft gear (see illustration 
above). The figure “1” on the main cam shaft gear is difficult to see because it is 
partially obscured by the main bed plate. However, it can be seen if care is taken to 
first remove accumulated grease or dirt. 


SETTING THE GEARS 
The Cylinder Gear 

First: Push the crank toward frame and thus allow the detent to lock the crank 
gear to the crank shaft. 

Second: Turn the crank until the figure “1” on the lowest or main cam shaft gear is 
in line with the three bearing stud slots and the crank parallels the line of the “gear 
train.” With it in this position the figures “1” on the cylinder gear, crank gear and 
main cam shaft gear should be in the alignment previously specified. If this test proves 
adjustment of cylinder gear necessary, remove it by releasing the screw on the hub, 
then correct the error by replacing the cylinder gear in correct position. Tighten the 
screw in the hub to fasten the gear securely. 

The Crank Gear 

The crank gear is attached to the crank shaft by means of a tapered pin. The gear 
hub and crank shaft are bored to a taper corresponding to the taper of the pin. 

The large end of the hole in the hub is that nearest the figure “1” on the gear. The 
large end of the hole in the shaft is that opposite the crank lock slot. 

Removing Crank Gear 

First: With a punch, about one-sixteenth inch in diameter, on the small 
end of the taper pin, drive the pin out of the hole and remove gear. 

Second: With small wrench loosen detent nut and take out detent. 

Take off crank and pull out crank shaft. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 






A. B. Dick Company 


Page 43 


Installing Crank Gear 

First. Place the shaft in the frame bearing with lock slot downward. 

Second.- Place gear on shaft so that the figure “1” on the gear rim 
will be in the correct relative position to the other figures “1” and the 
bearing stud slots. (See illustration on page 42.) 

Third'. With large end of hole in shaft and large end of hole in gear 
. u r e Ppr r . small end of the taper pin in the large end of the hole 

1 u r. ana ™ ve downward until the gear is securely fastened on the 
shaft. 

CAUTION ; The crank gear cannot be wrongly positioned on the shaft if 
the taper pin is properly entered in the taper holes of the gear hub and 
crank shaft. 

The Connecting Gears (Idler Gears) 

The slots in the bearing studs of the three connecting gears must be in the alignment 
specified in order that the correct position of the balance of the gears may be exactly 
determined. J 

Removing Connecting Gears 

Any one of the connecting gears may be taken out by holding a screw¬ 
driver in the slot and removing the stud nut with a small wrench. 

Replacing Connecting Gears 

With a screw-driver hold the stud slot of the gear in alignment, put on 
the stud nut and tighten. 

Setting the Main Cam Shaft Gear 

To alter the alignment of the main cam shaft gear, remove the center connecting gear 
as instructed above, and by means of the feed control knob (13a) revolve the large 
cam shaft gear until the figure “1” comes to a location where it points directly to a line 
which, if continued, would pass through the bearing stud slots of the two connecting 
gears remaining in place. (This operation need never be undertaken unless the gear 
train has been taken apart and improperly assembled.) 


Chapter 19 


How to Attach Print Recorder to the Mimeograph 


T HE print recorder is attachable to any No. 78 Mimeograph having a serial 
number over 2725, and to any No. 77 Mimeograph with serial number over 
3200. These numbers are to be found on the small brass plate attached to 
the front face of the machine. 


1 . Remove cylinder for convenience (see page 36). 6 . 

2. Remove rubber impression roller (see page 31). 7 . 

3. Remove the near-side impression roller tension 
spring by unscrewing adjusting nut (5). 

4. Remove impression roller lever and bearing 
(see page 31) on near-side frame—using a 
screw-driver in connection with the small wrench 
(to hold hexagon nut on hanger bearing). 

5 . Remove the three screws on the inside of the 
side-frame which hold the blank in the opening 
arranged to receive the recorder. 


Set hand-crank to its uppermost position. 

Set the hundred pointer (outer one) of the re¬ 
corder at 25. Now insert the recorder from the 
inside outward, and fasten with the screws. 

Replace the impression roller lever and be sure 
that the controlling pin on the back of the 
recorder is in the slot of the impression roller 
lever, before fastening. Replace impression 
roller and cylinder. 

9. Tack the celluloid directions for operation on the 
wooden base, where indicated by small holes. 


It will be obviously easy t<? detach the recorder, in repairing, by following 
the same order and reversing the details of procedure. 

N B -Observe that oil hole immediately above the bell is NOT designed for lubrication of the recorder, but should be frequently 
supplied with oil to lubricate the bearing of the “truck” (wheel) beneath, as illustrated on oiling chart (page 39) under 
arrow marked with largest “X.” 


For Reference Chart, showing all parts of the Mimeograph, see page 6. 







Page 44 


The Service Book 


The electrically operated Mimeograph and the 
Mimeoscope (an illuminated drawing table) are 
described in the following Chapters. 

A. B. DICK COMPANY. 





Page 45 


A. B. Dick Company 



Chapter 20 

Motor Drive for 

No. 78 and No. 77 Mimeographs 

HE capacity of the hand-operated Mimeograph is limited by the skill and speed of 
the operator. Electric operation of the machine assures maximum capacity. 
It is a great convenience for most classes of work but is especially advantageous 
m making long runs on paper of practically uniform size and weight. 

Clutch 

Cylinder Pulley 
Idler Pulley 


Machine Belt 
Belt 


Speed-Regulator-Control 

Handle 


Tie Bar 


Motor 
Oil Cup 

Link 

Motor Base 
Locating Hook 


Diagram of Electric Motor Equipment—attachable to any No. 78 or No. 77 Mimeograph 


Method of Installing Motor Equipment 

Place the hand-power Mimeograph on the motor stand 
with the rubber feet of the Mimeograph base resting 
in the recesses in the top of the stand. 

Set the cast-iron base to which the motor is attached 
on the lower rails of the stand frame, positively against 
the legs of the stand and with the motor locating-hook 
over the cross-rod at the leaf end of the stand. The 
motor pulley must be toward the side opposite the 
control lever. The long flat bar protruding from 
beneath the motor base is the control link. Insert the 
upright pin of the control crank into the hole in the 
control link. Then clamp the motor securely in position 
by means of the two bolts supplied for the purpose. 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 



Installing motor and base 
on machine stand 




















Page 46 


The Service Book 


Attach the bracket holding the countershaft to the under side of the base casting, 
on which the motor rests, by the three screws accompanying it. The small pulley on 
countershaft must be placed above the side-rail of the stand, before attaching bracket. 
To mount the small grooved idler pulley, remove cylinder and impression roller (7), 
unscrew adjusting nut (5), and free the spring, so that the bearing farthest from the 
operator, which carries the impression roller, will drop down. 

Now attach the small idler pulley on inside of frame, 
bypassing the screw bolt carrying the pulley through 
the hole in frame leaving the washer on bolt between 
the frame and idler pulley. Fasten securely in place 
with nut. 

To mount the large grooved cylinder pulley (continuing 
from above) replace impression roller, impression roller 
spring and cylinder 
in their original posi¬ 
tions, in the order 
named, but before placing trunnion (1) in final position 
pass it through the large grooved cylinder pulley, with 
the polished face of this pulley outward. Complete the 
forwarding of the trunnion until it enters the cylinder, 
and thence the ink-tank cradle, to which it gives sup¬ 
port. A slight lifting of the cylinder will assist this 
operation. Now firmly set the trunnion screw (2). 

To put electric counterweight on cylinder, first re¬ 
move that counterweight from the inside of the rim of 

the cylinder head farthest from the operating side of 
machine, by unscrewing and removing the three small 
screws found on outside of cylinder, and also loosening 
the screw in the front end of the cylinder tie-rod, 
which reaches to the counterweight. Substitute the 
special counterweight which is equipped with a clutch. 
The clutch stud should extend through the hole in the 
cylinder head, for connecting with cylinder pulley. 
Replace the three screws and tighten the. front tie-rod 
screw. 

Place the longer or machine belt over the grooved 
cylinder pulley, thence pass it downward over the 
small idler pulley through the hole in top of stand and attach it to the small grooved 
pulley on the countershaft. The tie bar on machine frame must be straddled by 
the belt. Place the shorter or motor belt over the large grooved pulley on countershaft, 
and over the small pulley on the motor shaft. 

If table does not rest steadily on the floor, loosen the set screw on the cap on the right- 
hand rear foot of the stand, and revolve the cap to the right to shorten the leg, or to the 
left to lengthen the leg, until steadiness is attained. 

Attach plug at end of circuit cord to lamp socket, first having the speed-regulator 
handle turned off, and the machine is ready to operate. 

CAUTION: The universal motor will operate on either alternating or direct current, 
but the motor voltage must correspond to the voltage of the circuit to which it is connected. 

When necessary to renew brushes on motor, caution the electrician not to change the 
position of the rocker arm holding brushes, as this is set in correct position for either 
direct or alternating current. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 



Installing the Electric Counterweight 



Putting the Cylinder Pulley in position 











A. B. Dick Company 


Page 47 


To Operate the Mimeograph by Motor 

When motor equipment is properly installed, in order 
to connect with the motor-power turn the clutch 
knob, found on inside of back end of cylinder, until it 
releases and the pin extends through against the cyl¬ 
inder pulley. Then turn the cylinder slowly by hand 
until this clutch pin enters the depression on the 
inside edge of the pulley. Be sure now to disengage 
the cylinder crank, so that it hangs down loosely. 

The Speed and Its Control 

Starting and regulating the speed of the Mimeograph 
is done by movement of the speed-regulator-control handle shown in diagram. (See 
page 45.) As the pointer is turned from the lowest to the highest number on the quad¬ 
rant, the speed of the Mimeograph will increase and vice versa. 

These figures have no definite significance but aid the operator in retaining a mental 

note of the position to which the handle must be 
returned when restarting the machine in order to at 
once attain the speed at which the machine had pre¬ 
viously been running. 

To insure a positive start, shift the speed-regulator 
handle at once to the high-speed position. The slower 
speed desired may afterwards be attained by turning the 
handle backward. The cylinder should not turn faster 
than one hundred revolutions per minute. Should any 
current make it possible to exceed that limit, the 
speed should be diminished by the operator. 



Starting the Motor 



Releasing the Clutch Knob to connect 
with Motor 


Renewing the Paper Supply 

In operating the No. 78 Automatic Feed, the supply of paper on the feedboard may be 
renewed without bringing both motor and machine to a stop. Simply lock down the 
feedboard, by depressing the feedboard release latch (17), and lift the paper-weight yoke 
(49), permitting the cylinder to continue its revolution until the paper is placed, then the 
yoke thumb-piece and the release latch can again be pressed toward each other, so 
that the paper will continue feeding as before. No effect upon the registration is in¬ 
volved. Similarly, when hand feeding either of the electrically driven models No. 77 or 78, 
the cylinder may be permitted to continually revolve; but, more than that, in the 
hand operation not a single feature need be made inoperative, or disturbed, while the 
paper supply is being renewed. 

To Return the Machine to Hand-Power 

Disconnect the motor by pulling out the clutch knob, on the back of the cylinder, and 
turning this knob until it locks. Return the hand-crank to its locked position on the 
crank shaft, and conditions for hand-feeding operation are restored. 


Repairs to the Motor Drive 

The motor is the main feature of the electrically equipped Mimeograph. They are 
subjected to a rigid inspection at our factory and therefore should give satisfactory 
service. 

The universal motor furnished should operate with little attention, except oiling. Where 
the operation is only occasional, repairs may not be needed for years. 

For Rejerence Chart , showing all parts of the Mimeograph , see page 6. 









Page 


___ The Service Book 

48 


If in time the motor’s efficiency deteriorates it can be rehabilitated by cleaning one or 
two parts, or the renewal of its two small carbon motor brushes (List No. 3576). 

However, when a motor-driven Mimeograph does not operate as fast as it should the 
operator often prematurely concludes that the motor is out of order. This premature 
conclusion is so frequently reached that our advice to operators is to examine every other 
possible source of difficulty before concluding that the motor is at fault. The following out¬ 
line is suggested for such examination: 


1. Does the electric equipment need lubrication? 

Oil the motor and countershaft as follows: 

Put good medium-weight oil in the oil cups (found on both ends of 
motorshaft), turning the outer cap until the opening appears. Close the 
cap after oiling. 

Refill each countershaft oil cup. Unscrew and remove the base of the 
cup, fill this base with oil and replace. 

Above the table, put a limited amount of oil in the oil hole feeding the 
bearing of the grooved cylinder pulley; but oil the small idler pulley, 
through the oil hole, more freely. 

Caution: Do not directly apply oil to the interior of the motor. 

(Is the speed now increased?) 

2. Does the Mimeograph itself run hard, for lack of proper oiling—thus overburdening 

the motor? 

Oil all principal bearings of the Mimeograph , to which attention has been 
called. (See Chapter 16.) 

(Does the machine itself now run easier? Try with hand-crank.) 

(Is the speed, with motor, now increased?) 


3. Has the machine belt so stretched as to be ‘‘slipping” on the small countershaft 
pulley? 

Should the belt be shortened? 

This question refers only to the longer of the two belts. The shorter, or 
motor belt, in driving the countershaft, requires the light tension you 
will find it to have. It will never be found to have stretched. Do not 
attempt to shorten or otherwise tighten this motor belt. Such tighten¬ 
ing would overload the motor. 

All belts used on this equipment are especially prepared to insure the 
minimum stretch; therefore, only belts furnished by us should be used. 

The heavy tension spring beneath the countershaft will keep the proper 
tension on the machine belt until the belt has stretched sufficiently to 
permit the countershaft bearing to touch the side rail. If such a con¬ 
dition develops the belt must be shortened by unscrewing one end from 
the belt-hook. Cut off about two inches, and, with a sharp knife, taper 
the cut end (gradually); now, by using plyers, screw it firmly into the 
belt-hook. A belt which is inclined to slip, on account of being oily, 
can be wiped clean with benzine or gasoline. 

(Did attention to belt increase the speed?) 

(Or, must we look still further?) 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 











A. B. Dick Company 


Page 49 


4. Is the electric current giving full power? 

The current should he tested as to voltage. 

This is a matter which must be taken up with your local electrician or, 
better, with the Company supplying the current. 

The motor may be in excellent condition but the current may be at 
fault, being of improper voltage. If the current is supposed to be one of 
110 volts, are 110 volts actually being supplied to the motor? Or, if of 
220 volts, are the full 220 volts being furnished? 

A deficiency in this respect may have arisen from an overloading of the 
particular lamp circuit with which the motor has been connected; or, 
if an alternating current, the local transformer may have an overload 
to carry. 

(Has the Mimeograph now its proper speed?) 

5. And then last of all, investigate the condition of the motor—if all other sources have 

been investigated, and the difficulty still exists. 

Where possible, get an electrician, but, where none may be available, 
endeavor to place the following suggestions before some one who knows 
at least something about a motor. 

First, disconnect the motor. 

Now, open the two hinged doors of the iron case of the motor, by prying 
aside, with a screw-driver, the small protrusions for the purpose, on the 
top edge of each door, and the parts to which we shall hereinafter refer 
will then be exposed to view. 


The Two Motor Brushes 

Next, remove and inspect the two motor brushes (No. 3576 Illustrated 
Parts List). These brushes are small pieces of carbon, the condition 
and proper action of which are vital to the efficiency of the motor. 
They will be found to be held in their position by coiled, flat-steel 
springs, in such a manner that they are permitted to slide freely 
from right to left, between confining guides, under a tension afforded by 
the springs. The upper one of these brushes is made accessible by the 
opening of the right-hand door, and the lower by the opening of the 
left-hand door. 


Attention to the Upper Motor Brush 

Attached to this carbon motor brush is a copper wire which passes downward under the 
flat brass terminal (a small, flat plate having a face about ^-inch square) and is held 
there by a broad, flat, brass spring. Release the tension of this terminal spring by press¬ 
ing inward on its lower end, and disconnect the brush wire from the terminal. Now 
put finger on the top end of the steel brush spring and pull this spring forward and 
downward, so that the brush may be pulled out from its guides. Do not let the spring 
snap backward, but confine it in a forward position by inserting under it a small chip of 
wood, allowing it to remain there until ready to replace the same brush, or a new one, 
as the case may require. 

Measure the motor brush on its longest surface. This was originally one inch m length. 
If through wear from contact with the revolving commutator, it has become shorter 
than three-quarters of an inch, it is advisable to replace the worn brush with a new 
one. When brushes are short the spring tension is weakened and the contact with the 
commutator is not positive enough to be dependable. If the same brush is to be re- 
nlaced examine the concave surface of its contact end, and if it be coated with a 
shiny, brassy, or greasy accumulation, this surface needs attention. Take a piece of the 

For Reference Chart , showing all parts of the Mimeograph, see page 6. 




Page 50 


-The Service Book 


finest grade sandpaper, bend it over a round lead-pencil, and rub it back and forth through 
the concave surface of the brush end, until such surface is entirely cleaned. 

CAUTION: Never use emery-paper nor emery-cloth in motor repairing, 
nor emery in any form. 


Again pull brush spring forward and downward, and replace the right-hand brush so 
that its curved end will conform to the curvature of the commutator. Again release the 
terminal spring and insert the brush wire under the terminal, from the top downward. 
If, in releasing the terminal spring, the covered (insulated) feed wire has accidentally 
been pulled out from its proper clamping (by the same spring) under the terminal, re¬ 
insert it through the round hole from the left. It is not material that the brush wire and 
feed wire make contact with each other. 


When a new motor brush is being substituted, see to it that it slides freely in the guides. 
If any tendency to bind, dress down the binding surface of brush slightly with the sand- 
paper. 

Attention to the Lower Motor Brush 

Above instructions apply to the lower motor brush also, except that the right and left 
directions when referred to are obviously reversed. In the replacement of this lower 
motor brush, however, the longest surface must be downward , to conform to the com¬ 
mutator surface and make proper contact. 

The Commutator 


The commutator of the motor is so easily damaged by those inexperienced in mot^ 
maintenance that it is always advisable, when an electrician is not available, to ship 
the motor to the factory for commutator repairs or cleaning. However, if by the proc¬ 
ess of elimination heretofore outlined, the cause of improper operation has not been dis¬ 
covered and remedied, the commutator should be examined. When in the best working 
condition the copper surface of the commutator is bright. If upon inspection it is 
found to be dark, stained or greasy looking, an electrician should be employed to clean 
it, or the entire motor should be shipped to the factory for that purpose. If the owner 
of the Mimeograph decides to have this work done by his local electrician, it is advisable 
that the procedure be as follows: 

A piece of the finest sandpaper, grade 000, 3 inches wide and 6 inches long, should be 
wrapped around a stick of wood y 2 -inch square and 6 inches long, so that the entire 
stick will be covered with sandpaper. The motor should then be connected, the current 
turned on and the pointer of motor control handle should be set at position 4 on the 
quadrant. The sandpaper-covered stick should then be carefully inserted and pressed 
downward against the copper surface of the revolving commutator. When the surface 
of the commutator has become bright and clean from this abrasive action the current 
should be turned off and the motor doors closed. Extreme care must be taken to avoid the 
sandpaper coming in contact with the insulated wires of the revolving motor. 


CAUTION: Do not put any oil or grease inside the motor. 


To determine the general condition of the motor and also to test the bearings in which 
the commutator shaft revolves, the following instructions should be followed: 

Take off the motor belt, turn off the current and allow the motor to run free from load. 
The motor, when so started, should pick up speed rapidly, and as it runs the speed is 
gradually increased until the highest speed is attained. It should then maintain an even 
speed and run smoothly. If the entire examination of the motor has been conducted in 
accordance with the directions previously given and if under this final test the motor 
performs satisfactorily, it will demonstrate its full capacity when again put into service. 

If when making this final test it is obvious that the speed of the motor is not what it 
should be, or if it is observed that the bearings have been damaged and consequently 
heat and interfere with the motor speed, the bearings will have to be repaired, which 
can be done only at the factory. 

For Reference Chart, showing all parts of the Mimeograph, see page 6. 









A. B. Dick Company 


Page 51 



Chapter 21 

The Edison-Dick Mimeoscope 


Instructions for Operating 

To properly understand these instructions read them 
consecutively, as certain principles, having been once 
explained, are not referred to in subsequent directions. 


The equipment included with the Mimeoscope 
consists of one each of the following: 


Universal Scale Sheet 
Combination T-square 
Combination Beam Compass 
Small-Circle Ruler 
Dermatype Handy Roller 
Set of Blotters 
Bottle Oil 

Small Piece of Perforating Silk 
Set of Guide-Line Sheets 
Book of Directions 


No. 405 Flat (Loop) Stylus—for plain lines 

No. 405-B.Small Flat (Loop) Stylus—for finer plain lines 

No. 406 Wheel Stylus—for plain lines 

No. 407 Wheel Stylus—for division lines 

No. 408 Wheel Stylus—for dotted leader lines 

No. 410-S Sharp Stylus—Ball-Pointed 

No. 410-XS Extra-Sharp Stylus—Ball-Pointed 

No. 410-XXS Needle-Point Stylus—Ball-Pointed 

Flexible Writing Plate 

Envelope containing Gummed Stickers 



































Page 52 


The Service Book 


Reference Chart of Mimeoscope Parts 



Following List Applies to the No. 1 (illustrated hereon) or to the No. 2 Mimeoscope 


1— Wing Nuts 

2— Stencil Buttons 

3— Glass-Plate Clamp 

4— Glass Plate 

5— Electric Lamp 

6— Electric-Lamp Socket 

7— Beveled Wooden Ledge 


8— Electric-Cord Plug 

9— Switch Button 

10— Large Thumb Nut 

11— Combination T-square 

12— Stencil-Clamp Thumb Nuts 

13— Stencil Clamps 

14— Limitation Lines 


15—Adjustable Stops 














A. B. Dick Company 


Page 53 


The Edison-Dick Mimeoscope 



Model No. 1—Standard Type 

For making stencils for Mimeographs Nos. 78, 77, 76 
and 75. (Printing capacity 7j4xl4 inches or less.) 


What the Mimeoscope Is 

T HE Edison-Dick Mimeograph equipment is not considered complete—for most 
users—without the Mimeoscope, an adjunct for the production of drawings, 
commercial forms, music, etc., and with it the range of Mimeograph stencil 
work is greatly enlarged. The Mimeoscope is an electrically illuminated draw¬ 
ing table by means of which tracings may be easily made from original drawings (or 
original work executed) on the Dermatype stencil paper Typewriting and handwrit¬ 
ing may be added to the same stencil and the whole rapidly reproduced in any quantity 
on the Mimeograph. 


What It Does 

The MimeoscoDe’s “Field of Usefulness” includes the following classes of work. The 
list k merelySuggestive; there is practically no limit to the variety of work that can be 

Ruled Office, School and Factory Forms, with typewritten, hand-lettered headings and 
column designations. 

For Reference Chart, showing all parts of the Mimeoscope, see page 52. 





Page 54 


The Service Book 


Outline and Detailed Commercial Illustrations for use in circular advertising, frequently 
adapted and traced from illustrated sheets. 

Mechanical Engineering and Architectural Drawings, generally reproduced by blue-print 
methods, are now being supplanted by mimeographing, especially in technical col¬ 
leges and manual training scIkdoIs, as a much quicker and less expensive process 
affording more distinct and legible work. 

Line Illustrations in School Work—of an unlimited variety, including examination and 
daily exercise papers, map work, drawing lessons, music, entertainment announce¬ 
ments, programs, tickets, etc., etc. 

Real Estate Plots, Land Survey and Road Maps, etc. 

Scientific and Statistical Sheets, Charts and Diagrams. 

Card Index Record Cards, Post Cards, etc. 

Fashion Model Design Work—for the cloak, suit and millinery trade, etc. 

Cartoon Work, Art Studies, and Outlines for Coloring (mimeographed), for correspondence 
instruction purposes. 

And for a great variety of other classes of work. 

Instructions covering all such work as the above is given in the pages that follow. 


Its Description in Detail 

The Mimeoscope, as seen from its illustration (page 53) is compact, sturdy and built 
to endure. It is a glass-top drawing table, with extending side-frame pieces which are 
properly squared for use with the T-square as is a draftsman’s drawing board. The top 
is of heavy plate glass with frosted finish, over which is laid a transparent flexible 
writing plate (see page 58). A 60-watt electric lamp is so placed at the apex of an 
inverted pyramidal reflector that all its rays are distributed without shadow over the 
drawing surface. An electric extension cord with standard plug permits attaching to 

any lamp socket. Stencil buttons are fixed in position 
for attaching the stencil sheet above the flexible 
plate, and provision is made for the retention of the 
stencil backing sheet for subsequent typewritten 
work. 

The top of the Mimeoscope may either be locked 
in a fixed position or may be released and revolved 
on its base at will to any position most convenient 
for work. An equipment of the drafting tools needed 
make the outfit entirely complete. 

When the tracing method is employed, the ruled 
form or drawing to be copied is placed beneath the 
flexible writing plate, while on it is laid the blue 
dermatype sheet. The electric rays, then being 
projected through both copy and stencil sheet, bring 
into view every detail of the form or design as 
clearly as though drawn on the stencil surface itself. 
The operation of tracing over these lines with a 
stylus makes a finished stencil. 

To Assemble the Mimeoscope 

After the Mimeoscope has been removed from its 
case, loosen the two wing nuts (1) found under 
that end of the wooden frame where are located the four stencil buttons (2). Now push 
aside the glass-plate clamp (3) and thus release the glass plate (4). Remove the 
packing from about the glass and lay the plate to one side. Remove the packing from 
the electric lamp (5) and screw it into its socket (6) within the pyramidal reflector. 
Then replace the glass in the position in which it was originally packed, press it toward 



MIMEOSCOPE No. 2 
Extra-Large Size. 

This size is required for making stencils 
for the large Mimeographs Nos. 79 and 80. 
Printing capacity 11 x 16 inches and 14 x20 
inches, respectively. Equipped with two 
60-watt lamps and switches. 


For Reference Chart , showing all parts of the Mimeoscope , see page 52. 








A. B. Dick Company 


Page 55 


the lower end of the frame and fit it under the beveled wooden ledge (7) so that it rests 
upon the bent-up edge of japanned sheet steel found immediately in front of ledge 
(Note). See that the glass plate is centered laterally. With one hand hold the movable 
glass-plate clamp firmly against the upper edge of the glass and with the other hand 
tighten the wing nuts underneath the frame which were formerly loosened. Screw the 
plug (8) at the end of the electric cord into an electric-light socket, turn on the current 
at the socket and also at the switch button (9) just below the Mimeoscope electric lamp. 
The glass plate should now be illuminated. The equipment includes a 60-watt, 110- 
volt lamp (or 220-volt if specified in order). 


WRONG-METHOD RESULTS 

Note. If not thus properly resting on the metal edge, the surface of the glass plate will be 
below the level of the wooden frame, and, therefore, the T-square cannot evenly rest 
upon the surface of the stencil sheet for accurate stencil-making. 


To Prepare the Mimeoscope for Use 

Place the Mimeoscope near a table or desk to provide a convenient place for working 
tools and materials, and as far from the prevailing light as the connection cord will per¬ 
mit, to assist in making the illumination within the Mimeoscope sufficiently penetrat¬ 
ing to sharply define the work on the stencil sheet. 

Release the large thumb nut (10) permitting the top to revolve. 

Draw upon the glass plate the “Limitation Lines.” Place the T-square on the white 
limitation lines (14) found on the upper end and left-hand side of the wooden frame, 
and with a lead-pencil extend them entirely across the glass plate. The rectangular fig¬ 
ure thus drawn will represent the limit of printing capacity (7)4 x 14 inches) of Mimeo¬ 
graph models 78 and 77. For other models the penciled lines should be located accord¬ 
ing to their printing area. If any special length roller is used on the Nos. 78 or 77 the 
side limitation lines should be positioned according to the roller length (Note 1). Copy 
should not be made wider than the length of the roller. 

Over the glass plate attach the “flexible writing plate” (see page 58). Either side 
may be used for writing and drawing. Dermax one entire side of the flexible plate; 
then blot off the excess and place the dermaxed side against the glass plate (Note 2), 
center the flexible plate (later¬ 
ally) and secure it in position by 
inserting its lower edge under 
the two stencil clamps (13) and 
tightening up the stencil-clamp 
thumb nuts (12). In so doing, 
see that the clamped edge of the 
flexible plate is located at least 
3^-inch away from the higher 
portion of the wooden frame on 
which it rests, in order that it 
may, if necessary, be sub¬ 
sequently adjusted to overcome 
any bulging of the flexible 
writing plate. The Mimeo¬ 
scope will then be ready for use. 


Limitation 
Lines (14) 


14 


V 


he dotted lines 
ipresent 

enciled border 14 
nes showing 
rinting 
ipacity of 
limeograph 


E 


z 






WRONG-METHOD RESULTS 


Note 1. 

Note 2. 


Estimating the size of a form or drawing to be made upon the stencil, unaided 
iy the proper Limitation Lines, would be likely to produce a stencil that could 
lot be completely printed. 

f the under side of a new flexible writing plate is not dermaxed the plate will 
;arp and spring away from the glass. 


For Reference Chari, showing all parts of the Mimeoscope, seepage 52. 



























Page 56 


—The Service Book 


Chapter 22 

The Mimeo scope Equipment 

The Ball-Pointed Styli 

For Handwriting, Sketching, Music, 

Maps, etc., on Dermatype Stencil Sheets 




Furnished in three degrees of sharpness: 

No. 410-S —Sharp, Ball-Pointed Stylus. 

No. 410-XS —Extra-Sharp, Ball-Pointed Stylus. 

No. 410-XXS—Needle-point, Ball-Pointed Stylus. 

Stylus No. 410-S 

The No. 410-S “Sharp” Stylus (with the red-tipped handle) is the least sharp of the 
above-mentioned styli, and on this account requires somewhat less care in handling than 
the others. It is the stylus generally used for writing signatures. It is especially in¬ 
tended for those who write a heavy hand. Pronounced effects in free-hand sketching 
and drawing can best be accomplished with this stylus. 

Stylus No. 410-XS 

The No. 410-XS “Extra-Sharp” Stylus (with the yellow-tipped handle) is a ball-pointed 
instrument somewhat sharper than the 410-S above described. This medium-point 
stylus is the one most used, it being adapted for general handwritten work, music, short¬ 
hand notes, maps and free-hand sketches, etc. It may likewise be used for work where 
certain portions require strong-line effects or heavy shading. If the lines are not 
sufficiently heavy, repeat the stroke. 

Stylus No. 410-XXS 

The No. 410-XXS “Needle-Point” Stylus (with the blue-tipped handle) is for special 
purposes. Fine drawing details require this stylus, and it will also be found most 
suitable for use in line development and retouching. This stylus has an especial 
adaptation for technical work having small signs and characters. Employ it for delicate 
work only. 

Whether used in drawing or writing it should be handled with a very light touch; for with 
this instrument, just as in the case of a fine-pointed pen, very little pressure is required. 
Properly handled, its fine ball-point will ride over the stencil fibers without pulling. 


Flat (Loop) Stylus No. 405 

o ..-.— 


This tool is for ruling; it rides smoothly over the stencil sheet and produces clear-cut 
lines. Cross-lining of any kind done with it will show less distortion at the points 
of crossing than would be the case if a round-pointed stylus were used. If a heavy 
ruled line is desired do not endeavor to produce such an effect at one heavy stroke. 
Rather, repeat the stroke in the same direction, “developing” the line to the width 
required, otherwise there is danger of severing the stencil-paper fibers. The writing 
plate offers a positive resistance that must be taken into account. This stylus has 
an advantage over the wheel stylus, No. 406, described on following page, for short lines and 
small details. 


For Reference Chart , showing all parts of the Mimeoscope, see page 52. 












A. B. Dick Company 


Page 57 


Small Flat (Loop) Stylus No. 405-B 



Finer lines can be made with this stylus than with No. 405. It produces clear, sharp 
lines and is adapted for use in crosshatched and shaded portions of free-hand drawings 
where a round-pointed stylus, with its greater tendency to distort the stencil, would 
give a less finished result. 


Wheel Stylus No. 406 



This plain wheel stylus is also an efficient implement for ruling straight lines. With 
it, crossing and recrossing of single and double lines can be done without distorting the 
stencil, and the lines it produces are especially smooth. Lines made with it can be 
strengthened or broadened by a repetition of the stroke, as recommended in the case 
of the flat styli previously described. It is indispensable in ruled form work. 


Wheel Stylus No. 407 



This wheel stylus produces the “dash and dot” line so much used in mechanical 
engineering and architectural drawing. To insure the best results press firmly ? as 
the stroke may not be successfully repeated. 


Wheel Stylus No. 408 



This dotted-line wheel stylus is used for a variety of ruled form work. Press firmly to 
insure a decided effect. Faint dotted lines in mimeographing are unattractive and 
have the additional disadvantage of becoming less pronounced when making long runs. 


Regarding the Wheel Styli 

Wheel styli obviate the danger of distorting the stencil fibers. However firmly 
applied, the pressure is always straight downward and they roll with smoothness, giv¬ 
ing a finish to the stenciled lines. In the use of wheel styli the following precautions 
must be observed: 

1. Keep the stencil sheet freely dermaxed. 

2. The bearing of the wheels must be kept free from dermax, and well oiled . 

3. Grip stylus firmly in the hand, and apply a uniform pressure throughout the 
stroke. 

4. Place the fiat side of the wheel against the ruler edge, and hold it there 
firmly in ruling. 

5. Always incline the stylus handle slightly away from the ruler. 

For Reference Chart, showing all parts of the Mimeoscope, see page 52. 














Page 58 


The Service Book 


Combination Beam Compass No. 605 



The combination beam compass is for drawing circles and simple curves on Dermatype 
stencil sheets. It has a small wheel stylus on one leg and an adjustable steel center-point 
on the other. Its rigid structure permits extremely accurate work. 

The movable handle of the compass should be tightened on the beam, in close associa¬ 
tion with the wheel stylus to afford the proper purchase, as will be evident in using it. 
It is necessary that the center-point be kept sharpened in order that it may be set into 
the surface of the flexible writing plate securely and thereby prevent slipping. In 
adjusting the center-point to the compass see that it extends downward to the level of 
the lower edge of the wheel stylus. 

The best position in which the compass can be held is with the upper end of the handle 
resting against the center of the palm of the hand, the hand itself maintaining a light 
hold on the instrument, with the handle of the compass leaning in the direction in which 
the line is being drawn. 

Make the sweep of the compass over the line lightly, two or three times, thus develop¬ 
ing it to any effect that may be desired. To make larger or smaller circles from the 
same center or to make a wider line, loosen the thumb-screw above the center-point 
leg and move the position of the beam without disturbing the center position of the 
point itself; then retighten the thumb-screw and proceed as before. 

The bearing of the wheel stylus must be well lubricated to run freely. 

The stencil surface must be thoroughly dermaxed in order to use the compass successfully. 
To make very small circles with the compass, interchange the position of the handle and 
the wheel leg. 


The Small-Circle Ruler 



This ruler is intended for use in describing very small circles on the stencil sheet. It 
demands less skill than is required to handle the beam compass for the same purpose. 
It is formed of a flat piece of metal in which are punched graduated round holes. Any 
one of the ball-pointed styli may be used to rule within the openings the size circle de¬ 
sired. The ends of the ruler are shaped to provide a means of holding and lifting it with 
the thumb and fingers held in an extended position. Its straight edges will be found 
convenient for ruling the details of a drawing. 


The Flexible Writing Plate 

This important part of the mimeoscope equipment, intended to lay over the glass plate, is 
a flexible and semi-transparent sheet of celluloid composition, specially devised for derma- 
type stencil work, affording a suitably roughened and resistant surface for effective 

For Reference Chart, showing all parts of the Mimeoscope, see page 52. 













A. B, Dick Company 


Page 59 


stylus work on the stencil sheet. It is reversible, but if from wear or damage both surfaces 
become too smooth, a new plate should be obtained. Occasionally clean it with hot water 
and soap that is free from grit. Gritty cleaning powders or alcohol used as a cleaner 
destroy the special surface of the plate. If a new plate bulges or curls, reverse it so that 
the opposite side will become relaxed by the dermax and lay flat upon the glass. 

The Universal Scale Sheet 

This transparent celluloid scale sheet is lined for many different kinds of work. When 
inserted between the glass surface and the flexible writing plate it should be so posi¬ 
tioned that its margin lines are parallel with the penciled limitation lines. Its use in¬ 
sures accuracy in ruled form work or mechanical drawing and in making stencils of staff 
lines for music, or scale paper for drawing purposes, or guide lines for either handwritten 
matter or any special work. It should be kept dry. Dermax will tend to efface its printed 
lines. 


The Combination T-Square 

This T-square has adjustable stops which prevent the ruled lines from 
running beyond their proper terminations. 

To move a stop on the T-square, press the button (15) with the fore¬ 
finger, hold the stop between the thumb and the second finger and s’ide 
it to position. Occasionally wipe the edges of the rule with an oiled cloth. 

Mimeograph Perforating Silk 

A small piece of this silk is furnished with the Mimeoscope. Pieces of 
larger sizes may be purchased. This silk will be referred to frequently 
in the instructions that follow. 

In work requiring its use it is laid and held over the surface of the stencil sheet and 
the stylus work is . done through its mesh. The silk affords protection to the stencil 
sheet, and distortion is thus avoided. Silk in use will become more or less wrinkled. 
Dermax will relax the wrinkles. The silk is usable until its mesh is destroyed by wear. 



Chapter 23 
Classes of Work 

RULED FORMS 
When Tracing from a Copy 

T HE dimensions of the copy must be within the printing capacity of the Mimeo¬ 
graph. If it is not so originally, it must be condensed to meet this requirement 
by narrowing columns, abbreviating box-headings and titles, etc. Sketch on the 
copy the necessary corrections so that they may be traced in proper location 
on the stencil sheet. 

The Typewritten Work 

In form work, wherever possible, titles, column headings or other descriptive matter 
should be typewritten upon the stencil sheet before the tracing is commenced. 

Establish the exact location of all typewritten words by placing the copy of the form be- 

For Reference Chart , showing all parts of the Mimeoscope, see page 52. 







Page 60 


The Service Book 


tween the blue Dermatype sheet and the backing, properly positioned laterally and as 
to height, and make such marks upon the surface of the stencil as will indicate clearly 
all starting points and endings of the typewriting required. (Small right-angle marks 
best serve the purpose. For such marking employ a smooth-point pen and red mk, or 
if extreme distinctness is desired use a red “china marking pencil” obtainable from 
the stationer.) 

Remove the "copy,” then dermax and typewrite the stencil sheet as indicated (seeSteps 
5 and 6). 

Attach Stencil Sheet to Mimeoscope 

Bend backward the button-hole stub of the stencil sheet at the perforations and crease 
it firmly. Take hold of the lower end of the blue Dermatype sheet with the right hand 
and with the left hand insert the backing sheet only (its lower end foremost) through 
the slot found between the buttons and the glass-plate clamp, lowering it until the stub 
and blue Dermatype sheet lie flat. This is done to preserve the backing sheet in prime 
condition for adding further typewritten matter when necessary. Attach the stencil stub 
to the buttons and use the handy roller tp.roll up the stencil sheet bef<pre dermaxing. 
Apply the dermax to the surface of the writing plate and unroll the stencil sheet over it 
as directed on page 11, Step 5. To better prepare and soften the Dermatype sheet for 
stylus use, it is advisable to dermax the top of the blue sheet also. Permit the dermax 
to remain about a minute and then blot off the excess. 

Position the Copy for Tracing 

Insert copy of form, face upward, between the glass surface and flexible plate, so that the 
typewritten portions will be in their proper location and registered with the spaces they 
are to occupy after the ruling has been done. As the work progresses occasionally reder- 
max and blot off excess in order to preserve the sheet in the best workable condition. 
Using wheel stylus No. 406 (see page 57), begin at the top of the sheet, ruling the hori¬ 
zontal lines first, and work downward. Substitute dotted wheel stylus No. 408 (see 
page 57) when a lighter effect is desired. 

Set one T-square adjustable stop (15) about one-quarter inch before or ahead of the 
starting point of the lines to be drawn and the other one-quarter inch beyond their ter¬ 
mination. Verify after the first line is drawn, and move stops, if necessary, for exactness. 

FREE-HAND WORK 

The fundamental principle involved in the execution of free-hand drawing and hand¬ 
writing on the stencil sheet is explained in the following instructions, which must be com¬ 
plied with exactly to obtain complete success. 

In free-hand work involving frequent line crossing the stencil sheet must cling to the flexible 
writing plate so as to permit the stylus to pass over the stencil sheet without disturbing 
its fibers and causing ragged lines. To insure this condition dermax must be sparingly 
spread on the flexible plate and a short time allowed for absorption by the Dermatype 
sheet. If as the work progresses the Dermatype sheet gradually becomes dry, redermax 
the top side and blot off the excess deposit immediately. If the freshly applied dermax be 
allowed to remain upon the stencil sheet it will penetrate to the plate and thereby unseat 
the stencil. Redermaxing and blotting off should be confined to that special portion of 
the stencil sheet then being used. Unnecessarily dermaxing completed portions of the 
work has a tendency to narrow the width of lines already drawn. All lines should be 
made reasonably open as a safeguard against closing that may subsequently follow 
redermaxing. 

Experience will enable the operator to maintain the Dermatype sheet in proper con¬ 
dition to produce the best results. When a thorough knowledge of the behavior of the 
stencil material is acquired, the operator will understand the necessity to avoid der¬ 
maxing so excessively as to cause the stencil sheet to become loosened from the writing 
plate. Good work can only be produced when the surface of the flexible writing plate 
is in good condition (not worn smooth), otherwise the stencil sheets will not properly 
adhere to it. The stencil sheet should not be raised from the plate until the work is 
completed. 


For Reference Chart, showing all parts of the Mimeoscope, see page 52. 




A. B. Dick Company 


Page 61 


To Make Hand-Written Stencils 

Attach, dermax and prepare stencil sheet as directed on page 60. The standard ruled 
sheet of guide lines with the equipment may be used if desired. It may be inserted and 
fastened beneath the flexible writing plate. Use stylus No. 410-XS (yellow tip), or, if a 
lighter line is desired, then stylus No. 410-XXS (blue tip). Select stylus best suited to 
the work and uses. If due pressure is not applied to the stencil surface the stroke of 
a coarse stylus will not be effective. The pressure applied to any round-point stylus should 
depend upon the degree of its sharpness. The medium point No. 410-XS is recommended 
for general work. The stroke should be easy and natural. On signatures and display 
words greater prominence is given by retouching. 


ILLUSTRATIONS 

To Make a Stencil of a Print or Drawing by Tracing 

Lift the free end of the flexible writing plate. Place the design to be copied on the 
glass plate, face upward, within the prescribed limitation lines. In calculating the proper 
distance from the top of the plate to determine the height at which the print will be 
made upon the impression sheet, consider the top pencil line on the glass plate as 
approximately the top printing line of the Mimeograph. Also plan the location of the 
drawing with reference to the size of the sheet of impression paper to be used. The T-¬ 
square will be helpful in positioning the copy. Attach the copy to the glass plate, by 
the use of paste or gummed paper, at the corners only. Replace the flexible plate so it 
covers the glass and the copy. Attach and prepare the stencil sheet as directed on page 
60. Dermax the top surface of sheet and blot off the excess. 

Intensify Copy Where Needed 

If the lines show indistinctly through the stencil sheet the original copy may be intensified 
by the application of oil to its surface. For this purpose a small bottle of oil is furnished. 
Any light-weight oil, or even kerosene, will serve this need. Apply the oil with a small 
piece of cloth, using a sufficient quantity to have it strike in deeply, and then wipe off 
the excess. 

Selection of Styli 

Each stylus has its special adaptation and, therefore, no fixed rule can be made governing 
selection. An intricate drawing may demand the employment of all the styli in the set. 
In considering the sharpness of the stylus to be chosen for any part of the work remember 
that the printed line, when the stencil is mimeographed, will show broader than the 
operator is likely to expect, judging from the appearance of the line when the stencil 
is on the mimeoscope. Beginners almost invariably press harder than is needed and 
thus produce a ragged effect in their work. For any close parallel-line shading, or 
crosshatching, whether ruled or free-hand, stylus No. 405-B should be used. 

The Solid Tones and Backgrounds 

A solid color effect over a limited amount of surface may be produced by a "back and 
forth” motion of the coarsest rounded point or the heavier loop stylus, taking care not 
to disturb the stencil fibers. This heavy effect and background work may be best done 
bv holding a piece of mimeograph perforating silk on the Dermatype sheet and using 
the stylus over it. Stretch the silk tightly and use more pressure on the stylus than 
would be required without silk. 

Note —To press extremely hard in shading a surface will injure the surface of the writing plate. 


The Stippled Background 

A half-tone effect may be produced by holding one of the duller round-pointed styli in 
a perpendicular position and repeatedly tapping or “stippling” the surface to be shaded. 

For Reference Chart, showing all parts of the Mimeoscope , see page 52. 





Page 62 


—The Service Book 


The Screenlike Background 

If a stencil be in other respects completed and raised from the plate, a screen-effect back¬ 
ground may be very quickly produced over any area desired by inserting between the 
stencil and the writing plate a piece of fine wire screening or “hair cloth” of similar 
mesh. Rubbing over this with the heavier-point stylus or other blunt rounded-pomt 
instrument should be done only through the perforating silk overlying the stencil sheet. 

Comparing with the Original and Adding Finishing Touches 

Before lifting the completed stencil from the writing plate, first unclamp the lower end 
of the writing plate and remove the original copy from the glass and compare it care¬ 
fully with the stencil. If any of the finer details are found to need retouching, do it with 
No. 410-XXS blue-tipped stylus and the small-loop stylus, and, if feasible, without 
redermaxing. 

AIDS IN MECHANICAL DRAWING 

If a design being traced involves “mechanical drafting,” such as is required in making 
stencils for manual training, engineering or architectural work, all the facilities ordinarily 
required are afforded by the accurately squared frame of the Mimeoscope, combina¬ 
tion T-square, beam compass and other specially designed tools. Other helpful tools, 
such as triangles, French curves, etc., may be procured locally if needed. 

PENCIL SKETCHING ON THE GLASS 

The ground-glass surface will be found well adapted for sketching or laying out an 
original drawing with a view of making a stencil. After the stencil is completed a damp 
cloth will serve to erase the drawing from the glass. 

When using a pencil compass directly on the glass plate, provide a center by pasting a 
small piece of cardboard on the glass to receive the point. Remove it when the drawing 
is completed. The beam compass may be used for such purpose by tying to its wheel 
stylus leg an ordinary pencil and extending the center-point to a corresponding length. 

CARE OF THE MIMEOSCOPE 

When through using the Mimeoscope, wipe off the glass top and writing plate and the 
surrounding depressed surfaces with a dampened cloth. Occasionally wipe the dust from 
the interior reflector surfaces and electric lamp. The wooden frame of the Mimeoscope 
and its japanned finish can be kept in good condition by use of any furniture polish. Do 
not use alcohol for this purpose. Keep the rubber cover spread over the device when 
not in use. 

CORRECTING ERRORS WITH MIMEOGRAPH VARNISH 

Care and accuracy save time in stencil-making, and avoid the need of making corrections, 
but for emergency use, varnish for obliterating errors is supplied with the Mimeograph 
(see page 13, Step 9, in regard to No. 260 and No. 262 and cork). If an error is 
made and, as is usual, a correct line is required to supplant the line to be removed, do not 
attempt to varnish out the error until the stencil has been completely made and can be 
raised from the plate. Then proceed to obliterate the error by first inserting a piece 
of paper between the stencil sheet and the flexible writing plate to prevent varnish 
getting on the plate (from which it is difficult to remove). Next, by blotting, make the 
section of the stencil to which the varnish is to be applied as dry as possible, for varnish 
will not adhere to a moist surface. When the stencil has been so prepared, brush a 
thin coating of mimeograph varnish over the lines to be erased. Correcting with varnish 
should be done over the illuminated top of the Mimeoscope. If the writing plate should 
become accidentally spotted with varnish it must be removed immediately with hot 
water and soap free from grit. If, in free-hand work, intricate line work, or espe¬ 
cially in handwriting, the above procedure cannot be advantageously followed and it 
becomes necessary to completely obliterate errors and then immediately make correc- 


For Reference Chart, showing all parts of the Mimeoscope, see page 52. 





A. B. Dick Company 


Page 63 


tions where the varnishing has been done, a special method must be employed. Stylus 
work cannot safely be done directly on a varnished surface. In such a case raise the 
stencil from the plate, insert the separating paper, dry the top of the stencil by blotting, 
brush on a thin coating of varnish, allow time for the varnish to partially set, remove the 
inserted paper, dermax the varnished surface and place over it a piece of mimeograph 
perforating silk (see page 59). Hold the silk, tightly stretched, while corrections are 
being made with the stylus. Thus working through the silk apply considerably more 
pressure than would otherwise be required. After removal of the silk any necessary 
retouching of the correction can be done with the finer-pointed styli. 


MUSIC STENCILS 
Tracing from a Copy 

A music copy of a size within the printing capacity of the Mimeograph is easily traced 
on the Mimeoscope. 

Raise the flexible writing plate and position the copy upon the glass surface in accor¬ 
dance with the location the prints are to occupy on the impression paper, using the T- 
square to insure the correct direction of the staff lines. With adhesive slips of paper 
secure the copy at the corners of the glass surface, using care not to shift its position, 
and then lower the flexible writing plate upon it. Attach the dermatype sheet, der¬ 
max and unroll it over the plate in the usual manner. Also dermax the top surface of 
the stencil sheet and blot off the excess. 

If the copy is sufficiently distinct to show the staff lines clearly through the blue stencil 
sheet, use the medium-point (yellow tip) stylus and at once write the clefs, signatures, 
notes, rests, etc., and then proceed to draw the staff lines firmly, as the last operation. 
For this staff-line work use wheel stylus No. 406, and the T-square with its stops properly 
positioned. Complete one staff at a time. Before starting on each staff, redermax and 
blot off the limited surface which is to include only the staff on which work is to be done. 

Copying from Sight, Without Tracing 

Place the universal scale sheet between the glass and the writing plate, with its side 
margins parallel with the limitation lines and fasten both with the stencil clamps. Attach 
and properly prepare the stencil sheet, remembering to dermax the top surface also. 
With wheel stylus No. 406, and the T-square with its stops positioned, proceed first to 
rule the staff lines upon the stencil sheet. Select from the groups of staff lines shown 
on the scale sheet those suitably spaced to provide for the required number of lines of 
words (typewritten or handwritten) or for music without words, as the case may be. 
Conform the full-length staff lines to the short music guide lines on the scale sheet by 
carefully tracing their indicated positions, as the lines are drawn. Rule firmly with 
wheel stylus to secure strong, enduring lines. If words are to be typewritten, the stencil 
sheet should now be detached from the Mimeoscope, the backing sheet properly der- 
maxed, and, after typewriting, replaced on the Mimeoscope for completion of the music. 
The lines of words should be apportioned to the lines of the staff, and their division into 
syllables will correctly determine the respective positions of the notes and other char¬ 
acters to be added. If the words are to be handwritten or hand-lettered the stencil 
clamps should first be released, the scale sheet removed and the clamps again tightened 
to hold the flexible writing plate only. Use, for hand-lettering, the medium or finer 
round-point stylus according to the size of lettering or the strength of line desired. Now 
proceed with the clefs, notes and other characters, and lastly use the loop stylus and 
small-circle ruler to rule the bars forming the measures. 


SPECIAL GUIDE-LINE SHEETS 

c 1ir v, sheets are designed for repeated use in mimeoscope work to establish limitations, 
line spacing etc In use these guide-line sheets are placed beneath the flexible writing 
plate while stencils are being made, similarly to the method of using such sheets of guide 
lines as are furnished with society stationery. As they are intended for special stencils 
they must necessarily be made by the user. 

For Reference Chart , showing all parts of the Mimeoscope , see page 52. 




Page 64 


The Service Book 


To make a special guide-line sheet for a particular use, lay a piece of light-weight paper 
over the universal scale sheet and attach both to the mimeoscope glass plate by means 
of the stencil clamps (13), omitting the flexible writing plate. 

From the universal scale sheet select such measurements or lines as are suited to the 
specific need, and, with the stops set at proper terminal distances, rule such lines by aid 
of the T-square, employing either pen or hard-lead pencil. The stencil sheet is not used 
in this instance. 


TO MAKE STENCILS FOR MIMEOGRAPHING SCALE PAPER 




There is abundant use for cross-ruled scale paper (as shown 
in accompanying illustration) in both elementary and tech¬ 
nical school work, as well as in the commercial arts. It is usu¬ 
ally an expensive item and therefore to mimeograph such 
paper effects a considerable economy, especially for schools. 
Directions: Properly position the universal scale sheet 
beneath the flexible writing plate. Attach and prepare 
stencil sheet as directed on page 60. In scale-sheet work 
absolutely straight-line results must be obtained. Set 
the T-square stops to suitably limit the horizontal 
lines, and with the wheel stylus No. 406 draw these lines, 
first having selected the required dimensions on the scale 
sheet for spacing the lines apart. When all lines are 
ruled in one direction, revolve the top of the Mimeoscope 
to a convenient position and repeat the operation, draw¬ 
ing the cross lines in a similar manner. 


Chapter 24 

Signatures and Simple Ruling 

Signature Plate and Styli are Furnished with the Mimeograph 

T HESE accessories, which include one writing and one ruling stylus, are supplied for 
signature writing and for occasional ruling on typewritten forms. They are not 
offered as a substitute for the complete autographic equipment. 

SIGNATURES 

For adding signatures to typewritten letters, the stylus supplied, described as No. 410 
sharp stylus, best serves the average need. After typewriting the letter, insert the 
flexible signature plate between the backing and the stencil in proper position for the 
signature. See that the stencil is laid smoothly over the plate and slightly dermax the 
top surface of the stencil where signature is to be written. Allow an instant for softening 
of the stencil sheet and blot off the dermaxed surface. Then with the backing resting 
on a hard and resistant surface write the signature with such firmness of stroke as an 
ordinary hard-lead pencil would require. The perforating silk is often used by laying 
it over the stencil, the writing being done on it instead of directly on the stencil sheet. 

RULINGS 

Flat (loop) stylus No. 405, supplied for rulings, may be used on the stencil sheet and 
backing only, in which case it is imperative that the backing rest upon a hard surface. 


For further knowledge of the mimeographing art, the Company is at your 
service, by correspondence. A i ^ . 

A. B. Dick Company, Chicago. 


For Reference Chart, showing all parts of the Mimeoscope, see page 52. 































































































INDEX 


Adjustments, Don’t Disturb.41 

Architectural Drawings. See Drawings 

Autographic Stencil Work. See Stencil 

Automatic Feed-Rolls. See Feed-Rolls 

Automatic Feed-Rolls, Renewal of .37 

Automatic Feeding of Paper ..19 

Automatic Feeding of Narrow Sheets.32 


B 

Backgrounds—for Drawings, Illustrations, etc. See Drawings 

Backing Sheet, Preparing with Dermax.11 

Backing Sheet, Detaching from Stencil .16 

Beam Compass, Combination .58 

Bell. See Print Recorder 

Belts . See Motor 

Brush, Dermax. See Dermax 

Brush, Ink . .. See Ink Fountain 

Brush, Varnish and Rubber Cork. See Correcting Errors 

Brushes, Motor. See Motor 


C 

Cards. See Hand Feeding 

Chart, Reference—of Mimeograph Parts . 6 

Circle Ruler, Small.58 

Cleaning Cylinder, Use of Benzine in .30 

Cleaning Impression Roller, Use of Alcohol in .37 

Cleaning Inside of Fountain.36 

Cleaning Mimeograph .30 

Cleaning Motor Commutator.50 

Cleaning Typewriting Machine .11 

Cleaning Writing Plate, Mimeoscope .59 

Clips, Cylinder. See Cylinder Clips 

Cog-Wheels . See Gears 

Combing Paper, Method of . See Paper 

Compass, Combination Beam .58 

Cork, Rubber, for Varnish. See Correcting Errors 

Correcting Errors on Autographic Stencils.62 

Correcting Errors on Typewritten Stencils.13 

Counterweights . See Motor 

Cover, Mimeograph, Keep on .25 

Covers, Flexible, for Cylinder .24 

Cross-Section Paper, Making by Mimeoscope . 64 

Cylinder, Removing .36 

Cvlinder, Cleaning . See Cleaning 

Cylinder Clips, Adjusting According to Impression Roller.17 

Cylinder Clips, Position Before Attaching Stencil.16 

Cylinder Clips, Position After Attaching Stencil .17 

Cylinder Cloth Pad. See Ink Pad 

Cylinder Pulley, Placing in Position.46 


D 

Dermatype Stencil Paper. 

Dermax (Fluid) . 

Dermax Brush. 

Drawings, Architectural. 

Drawings, Backgrounds, How to Make 

Drawings, Free-Hand . .. 

Drawings, How to Make Solids . . . 
Drawings, Mechanical Engineering . . 
Drawings, Pencil Sketching on the Glass 
Drawings, Reproduction by Mimeoscope 
Drawings, Tracings, by Mimeoscope 


See Stencil 
... H 
... 11 
... 54 

... 61 
... 60 
... 61 
... 54 

... 62 
60, 61, 62 
... 59 


E 

Electric Equipment . 

Engineering Work, Mechanical . . . 
Errors . 


. . See Motor 

.54 

See Correcting 


65 





























































INDEX — Continued 


P Page 

Feedboard, Automatic, Attaching .. . 9 

Feedboard, Hand, How to Attach to No. 78.27 

Feed Control .21 

Feed Control Knob, Adjusting.21 

Feeding, Automatic .19 

Feeding, Automatic, of Narrow Sheets.31 

Feeding, Hand, No. 78 27 

Feeding Light and Heavy Papers.20, 22 

Feeding Perforated Sheets of Paper. 27, 28 (3d par.) 

Feed-Plate, Regulating Tension of .20 

Feed-Roller, Idler.22 

Feed-Rolls, Automatic, Installing and Renewing.37 

Feed-Rolls, Paper, Regulating Action of.21 

Feeler-Pins, When Not to be Used .28 

Filing Away Stencils . See Stencil 

Flexible Covers, Paper . See Covers 

Flexible Cylinder Covers, Paper . See Covers 

Flexible Signature Plate.64 

Flexible Writing Plate .58 

Flexible Writing Plate, Cleaning. See Cleaning 

Fluid, Dermax. See Dermax 

Form Work, Ruling and Filling In .59 

Fountain, Ink . See Ink Fountain 

Fountain, Ink, Proper Method of Filling . See Ink Fountain 

Free-Hand Drawings, Mimeoscope. See Drawings 

G 

Gears, “Timing,” Adjusting.41 

Guide, Paper, Auxiliary.32 

Guides, Paper, Adjustment of .19 

Guide-Line Sheets .63 

H 

Hammond Typewriter . See Stencil 

Hand Feedboard, Attaching to No. 78 . See Feedboard 

Hand Feeding Electric-Driven Machine. 29 

Hand Feeding of Paper. See Feeding 

Handwritten Stencils on Mimeoscope. See Stencil 

Handy Roller .11 

I 

Idler Feed-Roller, Adjusting of.22 

Idler Pulley, Installing .. See Motor 

Impression Roller, Care of and Cleaning .37 

Impression Roller, Narrow, When Needed.31 

Impression Roller, Removing Old .31 

Impression Roller, Removing Ball-Bearing Model .31 

Ink Changing .35 

Ink Fountain, Supplying and Filling .15 

Ink Fountain, Removing .35 

Ink Fountain, Cleaning Inside of.36 

Ink Fountain Brush, Care of and Adjusting .38 

Ink Fountain Vent Valve .36 

Ink Pad (See that it is sufficiently inked) .15 

Ink Pad, Renewing.14 

Interleaving Mimeograph Copies.30 

L 

Limitation Lines.55 

Lint on Stencil.35 

M 

Matching Ribbons for Filling in Names and Addresses .34 

Mechanical Drawings. See Drawings 

Mimeograph, Assembling of. 9 

Mimeograph, Care in Putting It Away .25 

Mimeograph, Chart of Parts. 6 

Mimeograph, Cleaning of .30 

Mimeograph, Oiling (See Charts).39, 40 

Mimeograph, Operation by Motor .47 

Mimeograph Cover.25 

Mimeograph No. 78, Electric, Chart of.45 

Mimeograph No. 78, Hand Feeding.27 


66 

































































IN D E X— Continued 


Mimeograph No. 77, Electric, Hand Feeding.29 

Mimeograph Perforating Silk, Use of in Mimeoscope Work 59, 64 

Mimeograph Supplies, Proper Ones to Use. 5 

Mimeograph Varnish. 13 

Mimeographing of Cards . .**.** 29 

Mimeoscope, Connecting Electric-Light Cord. !!!!.*! 55 

Mimeoscope, Equipment of . 56 

Mimeoscope, Free-Hand Work. .!!!!! 60 

Mimeoscope, Handwritten Stencils.[ * ’ 61 

Mimeoscope, Model No. 1 . 53 

Mimeoscope, Model No. 2. ’ 54 

Mimeoscope, Music Stencils.* [ * 63 

Mimeoscope, Pencil Sketching on Glass.62 

Mimeoscope, Placing, Assembling and Installing.54, 55 

Mimeoscope, Preparing Stencils for.60 

Mimeoscope, Reference Chart of Parts .52 

Mimeoscope Cross-Section Sheets .64 

Mimeoscope Drawings.60, 61, 62 

Mimeoscope Guide-Line Sheets .63 

Mimeoscope Illustrations .61 

Mimeoscope Instructions .61 

Mimeoscope Ruled Forms.59 

Mimeoscope Solids and Backgrounds .61 

Mimeoscope Tracing .59 

Mimeoscope Universal Scale Sheet . 59 

Motor, Care of and Repairs to.47 

Motor, Connecting.45 

Motor, Control of Speed .47 

Motor Bearings.48 

Motor Belt, Tightening and Adjusting.48 

Motor Brushes, Particular Attention to.49 

Motor Brushes, Upper and Lower.49 

Motor Commutator, Cleaning .50 

Motor Counterweights, Installing .46 

Motor Drive, Repairs to .47 

Motor Equipment, Installing .45 

Motor Oiling .48 

Motor Operation of Mimeograph.47 

Motor Speed, Control of . 47 


N 

Narrow Sheets of Paper, Handling and Feeding . . . 

0 

Oil, Best to Use . 

Oil, Use of in Making Mimeoscope Copy Transparent 
Oiling Charts. 


31 


. 39 

. 61 
39, 40 


P 


Pads, Inking. 

Paper Combing, Method of . 

. . See Ink Pad 
.19 

Paper, Cross-Section Scale Paper. 

Paper, Heavy .. 

Paper, Narrow Sheets, Automatic Feeding of . 

Paper, Perforated Sheets of . 

Paper, Thin or Light . . . .. 

Paper Wrinkling How to Avoid. 

.64 

. . See Feeding 
. . See Feeding 
. . See Feeding 
. . See Feeding 
.28 

Paper Back Stop. 

.19 

Paper Feed, Releasing and Starting. 

Paper Feed-Plate, Regulating Tension of . 

Paper Guide, Auxiliary . 

Paper Guides, Adjusting of . 

Psmpr AVpicrht AHiimtincr . 

.21 

.20 

. . . See Guides 
. . . See Guides 
.19 

A VV . 

Pnr»pr-Wpicrht Rod Adiustinef - . 

.20 

x apci" vv cigiiL nujuouug . 

Dot-fo Ponair HTvixr tn OrHpr . 

.41 


Position of Work on Stencil Sheet, How to Plan .... 

Print, Raising and Lowering on Paper . 

Printe 1 \/TqVp T)qrfc’ nr T ip’llf* . 

.10 

.23 

.33 

Pr,'n +- T?A^nr-Hpr A ttispfiincr tn TYTimpopranh . . . 

.43 

i nn l i\ecoraer, • • • • • • • 

Print Recorder, Setting for Number of Copies Wanted . 
Pulley, Cylinder, Placing in Position . 

.23 

. . . See Motor 
. . . See Motor 


67 




































































INDEX—Concluded 


R 

Receiving Tray, Installing. 

Receiving Tray, Adjusting for Paper Used 
Reference Chart of Mimeograph Parts . . 

Registration of Print . 

Repair Parts, How to Order .. 

Ribbons, Typewriter, for Matching . . . 

Roller, Handy.. . . 

Roller, Idler Feed. 

Roller, Impression . 

Roller, Typewriter . 

Rollers, Feed, Automatic . 

Rubber Cork for Varnish Brush . . . . 

Ruler, Small-Circle. 

Ruling, Simple, and Signatures. 

Ruling and Typewriting on Same Sheet . 


Page 

. 9 

.22 

. 6 

.29 

.41 

.34 

.11 

.22 

. See Impression Roller 
See Typewriter Platens 
. . . . See Feed-Rolls 
. See Correcting Errors 

.58 

.64 

. . . See Form Work 


5 

Scale Sheet, Universal, for Mimeoscope.59 

Signature Plate . See Flexible 

Signatures and Simple Ruling .64 

Silk, Mimeograph Perforating—Use on Mimeoscope .59, 64 

Small-Circle Ruler .58 

Soapstone (Talcum), Uses of.35 

Solid Tones and Backgrounds, Mimeoscope Work .61 

Square, Combination T.59 

Stencil and Its Making .11 

Stencil, Adjusting Thumb-Screw.32 

Stencil, Autographic, Correcting on Mimeoscope . . See Correcting Errors 


Stencil, Detaching Backing from.16 

Stencil, Filing Away for Future Use .24 

Stencil, Preparing with Dermax .11 

Stencil, Preparing for Mimeoscope .60 

Stencil, Putting on Cylinder.17 

Stencil, Removing from Typewriter.13 

Stencil, See if Correctly Written .13 

Stencil, Special for Hammond Typewriter. 10 

Stencil, Straightening Lines on the Print .32 

Stencil, Treatment of When Dry.34 

Stencil, Typewriting of ..12 

Stencil, Use of Short Dermatype Stencil Sheets.17 

Stencil, When It Should Remain on Cylinder .24 

Stencils, Music.63 

Stencil Paper, Care of .34 

Strippers and Clips, Adjustment of .17, 18 

Styli, Different Kinds, Uses of. 56, 57, 58 

Styli, Selection of .61 


T 

Talcum (Soapstone), Uses of. 

Tank, Ink. 

“Timing” Gears, Adjustment of . . . . 

Tracing Method, Mimeoscope . 

Tray, Paper Receiving—Adjusting . . . 

T-Square, Combination. 

Typewriter, Cleaning. 

Typewriter, Hammond, Special Stencil for 
Typewriter, Preparing for Stencil Cutting 

Typewriter Platens (Rollers). 

Typewriter Ribbons, Matching . . . . 
Typewriting and Ruling on Same Sheet . 


Universal Scale Sheet 


U 


.35 

See Ink Fountain 
.41 


59 

11 

10 

11 

33 

34 
59 


59 


V 

Varnish, Mimeograph, for Correcting Errors 
Varnish Brush and Rubber Cork . . . . , 


13 

13 


W 


Weights (Counterweights), Installing. 46 

Writing of Stencils .12 

Writing Plate, Flexible, Mimeoscope .58 

Writing Plate, Flexible, Cleaning of .59 

Wrinkling or Creasing of Paper .28 


1,7 4 . 


68 


























































































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